Which smartphone has a large display. Doubling the battery life: optimal settings for the display. Moderate display brightness

Regardless of the peculiarities of using a smartphone - whether it is an endless update of ribbons social networks, passing mobile games or reading books - the user is constantly looking at his screen. That is why it is extremely important that the picture on the display of the device is pleasing to the eye. V this case we are talking not only about the brightness level, but also about other important parameters. Today we will take a look at the applications that allow you to customize them. What programs are on this list? Let's find out.

Perhaps each of us uses a smartphone before bed, right? This can be the setting of an alarm clock or correspondence with a loved one. Be that as it may, contact with gadgets is highly undesirable. The fact is that thanks to artificial light, I am sure that it is daytime outside, and it is too early to sleep.

Can this be fixed? Yes, and you don't have to throw away your favorite smartphone to do this. It is much easier to try the SunFilter application, which is able to change the temperature of the image on the display.

Another auto brightness

Quite a strange name, isn't it? Despite this, it will hardly be difficult to understand the application. Its purpose is to increase user control over the automatic brightness level.

According to our colleagues from phonearena, brightness range in this annex much wider than that in the function built into the smartphone. Thanks to this, you can not only extend the operating time of the device, but also make the use of your smartphone more comfortable in low light conditions.

It's hard to underestimate the usefulness of IntelliScreen. It can be used to prevent the display from dimming in a particular application.

In addition, the app is able to turn on the display every time you take the device out of your pocket. Convenient, isn't it?

The principle of Twilight is somewhat similar to the SunFilter. The program makes the screen adapt to the time of day, protects the user from the blue spectrum and uses a nice red filter.

In addition, the use of material design is also important.

Do you correct the image on your smartphone? Share your answers in the comments.

Tests of displays of smartphones flagships 2016-2017. We evaluate brightness, contrast, black depth, readability in the sun and correct color reproduction.

Today we are choosing the best smartphone screens of 2016 and 2017. When comparing displays, we will not rely on passport data, although we will definitely talk about them, but on test results. Let's check the brightness and depth of black color, contrast, correct color rendering and readability in the sun. Based on real numbers, we will determine the best smartphone display among the flagships of 2016 and 2017.

2017 flagship displays: specifications

Let's start with the characteristics. The flagships of 2017 came out mainly with large screens. Diagonal 5.7 inches we see in the LG G6 and. and Xperia XZ Premium got screens with a diagonal 5.5 ... The displays of the new Galaxies have become the largest.

Fans of compact phones looking to purchase the 2017 flagship are still forced to choose from three models: Xperia XZs, Xiaomi Mi 6 and Huawei P10. The diagonal of the display of these gadgets does not exceed 5.2 inch, which by today's standards is quite suitable for the category of compact. Smartphones with screens less than 5 inches should be classified as "super-compact".

Smartphones flagships 2017: display characteristics

	Diagonal	Permission	PPI	Screen type
Galaxy S8 +	6.2	1440 x 2960	529	AMOLED
Galaxy S8	5.8	1440 x 2960	571	AMOLED
Lg g6	5.7	1440 x 2880	564	LCD
HTC U Ultra	5.7	1440 x 2560	513	LCD
Huawei P10 Plus	5.5	1440 x 2560	540	LCD
Xperia XZ Premium	5.5	2160 x 3840	807	LCD
Huawei P10	5.2	1080 x 1920	432	LCD
Xperia XZs	5.2	1080 x 1920	424	LCD
Xiaomi Mi 6	5.15	1080 x 1920	428	LCD

Also noteworthy is the gradual departure from the standard aspect ratio. If earlier a display with a ratio of 16: 9 was an uncontested option, today we are offered 18:9 , and even 18.5: 9 ... Time will show how popular and convenient the extended screen will be. So far, there is a lot of talk about the lack of content, but this is unlikely to become a serious problem.

Along with the aspect ratio, resolution standards are gradually changing. In we see an increase in the vertical layout to 2880 pixels. The number of pixels vertically increased to 2960 ... This means that at the maximum screen resolution, the graphics accelerator will have to calculate an additional 576,000 pixels. On the other hand, Galaxy S8 / S8 + run at FHD + resolution (2200 x 1080 pixels) in normal mode, so the load on the super powerful chipset is not that great.

Of the flagships of 2017, only compact ones received Full HD resolution Xperia smartphones XZs, Xiaomi Mi 6 and Huawei P10. All others have a screen resolution of QHD, QHD + and higher. The record holder, of course, became Xperia phone XZ Premium with Ultra HD display resolution. This is the only one presented on current date flagships with UHD resolution.

Best smartphone screens: brightness and contrast tests

With passport data done, let's move on to the most interesting - the results of testing the best smartphone screens in 2017. The first in the spotlight will be indicators such as display brightness, black depth and contrast. For the sake of completeness, let's compare the test results of new products with the indicators of the screens of smartphones manufactured in 2016.

The best smartphone displays in terms of black depth are a priori screens on the Amoled matrix. Of all the new products presented this year, only Galaxy S8 / S8 + received this type of matrix, and therefore they have no competitors in this category. Absolute Black is only available in Galactic Supernovae. The best black color among LCD screens gives Lg g6... Perceptible black depth issues on the HTC U Ultra and Xperia XZs.

Flagships 2017: display tests

	Black cd / m2	Brightness, cd / m2	Contrast
Galaxy S8 +	0.00	442	~
Galaxy S8 + max auto	0.00	647	~
Galaxy S8	0.00	440	~
Galaxy S8 max auto	0.00	618	~
HTC U Ultra	0.539	428	794
HTC U Ultra (max auto)	0.564	507	899
Xperia XZs	0.461	564	1223
Huawei P10 Plus	0.335	547	1633
Huawei P10	0.416	592	1423
Lg g6	0.228	468	2053
LG G6 (max auto)	0.277	564	2036

The best smartphone displays are more difficult to determine in terms of brightness. At automatic settings to the maximum we see the leadership of the Galaxies, but in standard mode many displays can compete with them. High screen brightness Xperia XZs and Huawei P10... The latter is almost as good as the Galaxy S8's screen at maximum brightness.

Maximum contrast is a cumulative indicator that depends on brightness and black depth. For Amoled displays, the indicator is not defined, since it is mathematically equal to infinity. Simply put, their maximum contrast is almost perfect (or perfect).

The best smartphone screen for maximum contrast in the IPS LCD league is the display Lg g6... The contrast ratio of the LG G6 exceeded the grandmaster mark of 2000: 1, and this is a record figure for the entire existence of the smartosphere. The HTC U Ultra has the biggest contrast issues. Concerning Sony flagships and Huawei, here the screen contrast is above average.

It remains to compare the performance of new products with test results best smartphones 2016 release. The results are in the table, and just below the table is a short summary with key points.

Flagships 2016: display tests

	Black cd / m2	Brightness, cd / m2	Contrast
Galaxy S7	0.00	391	~
Galaxy S7 max auto	0.00	563	~
Galaxy S7 edge	0.00	392	~
Galaxy S7 edge max auto	0.00	610	~
LG V20	0.43	475	1097
LG V20 max auto	0.59	628	1064
Google pixel	0.00	445	~
Google Pixel XL	0.00	432	~
iPhone 7	0.35	561	1603
iPhone 7 (max auto)	0.40	656	1640
iPhone 6s	0.36	536	1481
Huawei P9	0.46	500	1094
Huawei Mate 9	0.41	665	1622
HTC 10	0.29	428	1543
OnePlus 3T	0.00	447	~
Xperia XZ	0.37	502	1223
Xiaomi Mi 5	0.51	628	1227
Xiaomi Mi 5s	0.51	660	1294
Xiaomi Mi 5s Plus	0.44	637	1448

In terms of brightness, the screens of the Galaxy S8 / S8 + surpassed the displays of last year's Galaxy, but they met strong rivals in the face of the iPhone 7, Huawei Mate 9, LG V20 and all versions of Xiaomi Mi 5. The brightness indicator of each of the listed phones exceeded the mark 600 nits, and the best were Xiaomi Mi5s(660 nits) and iPhone 7(656 nits).

In terms of the depth of black, none of the smartphones of 2016 (on the IPS matrix) reached the performance of the LG G6, which becomes the winner in this nomination. Better screens smartphones in 2017 in terms of maximum steel contrast iPhone 7(1600: 1) and Huawei Mate 9 (1622:1).

Best smartphone display: sunlight readability

Readability in the sun is assessed by a coefficient, which is an integral indicator. In a sense, the test sums up the results of testing according to the previously considered parameters (especially contrast), but there is no point in drawing a direct parallel between contrast and readability in the sun. The results are in the diagrams. Note. Charts are not displayed correctly in Samsung browser Internet, older browsers and some built-in browsers on mobile platforms. We recommend opening the publication in current assemblies Google chrome, Opera or Firefox.

Sun Contrast Ratio

The undoubted leaders and trendsetters in this nomination are screens Samsung Galaxy... The first lines are occupied by new items S8 / S8 +, followed by S6 edge + and S7 edge... Next in the group of leaders are smartphones with Amoled screens: OnePlus 3T, Pixel XL, ZTE Axon 7.

The league's best LCD smartphone displays are the screens iPhone 7, Xperia XZs and Lg g6... The high-ranking Huawei P9 Plus is not on this list as the phone is equipped with a Super Amoled screen. Xiaomi Mi5s Plus has the worst readability in the sun among the flagships.

The best screens for color accuracy

Color accuracy is assessed by the color accuracy ratio (DeltaE). The color accuracy coefficient characterizes the degree to which the color gamut displayed by the phone display deviates from the reference scale. The smaller the deviation (less DeltaE), the better.

When testing smartphone screens, the average and maximum color accuracy coefficient is estimated. Average DeltaE shows the total deviation from the standard over the entire spectrum, maximum - the largest deviation in some part of the color scale.

Flagships 2016-2017: color accuracy

	Average DeltaE	Maximum DeltaE
Galaxy S8 +	3	5.6
Galaxy S8	2	3.2
Galaxy S7	1.7	2.3
Galaxy S7 edge	0.8	1.5
HTC U Ultra	6.1	10.7
Xperia XZs	6.2
Huawei P10 Plus	4.1	5.8
Huawei P10	6.5
Huawei Mate 9	5.2	9.5
Lg g6	4	9
iPhone 7	1.7	4
Google pixel	4.9	11.6
Xiaomi Mi 5	3.2	6.9
Xiaomi Mi 5s	3.5	4.5

The best DeltaE coefficient among the representatives of the seventh generation of the Galaxy. Record numbers for Galaxy S7 edge... The Galaxy S8 scores excellently, although the numbers are a bit skeptical in light of news about the pinkish hue of some samples. Very accurate color reproduction iPhone 7... The rest of the 2016-2017 phones show good, but not outstanding results. Note (with a minus sign) a significant deviation in the color gamut of HTC U Ultra and Google Pixel.

Best smartphone display: the bottom line

Best Smartphone Display 2017 - Screen Galaxy S8, moreover, it is the models without the Plus index. He has a record readability in the sun, very accurate color reproduction, high brightness.

Among the samples with LCD panels, the display becomes the best Lg g6 which, among other things, supports Dolby Vision and HDR10 standards. His strengths: Record contrast ratio, deepest blacks among IPS screens, accurate color reproduction, albeit with slight deviations. The readability in the sun is also high, so the phone rightfully gets the award for "Best LCD Smartphone Screen".

Best smartphone displays of 2016 - screens Galaxy S7 edge and iPhone 7... The latter did not fail a single test and was among the leaders everywhere. As for the Galaxy S7 edge, its performance is close to the reference.

One of the best phone displays is the Huawei Mate 9, which is good for everyone, except perhaps for color accuracy. Even more pronounced are the color issues with the Google Pixel display, which is otherwise satisfactory. Xiaomi Mi 5 has another problem - not deep enough black, due to which the contrast and readability in the sun drops, but the color accuracy is complete.

It remains to choose the best smartphone display in 2016-2017. In principle, we are against the unambiguous distribution of medals, because there are enough worthy applicants. But if you really choose, then Galaxy S7 edge... An excellent display in all respects, the only one, and that conditional, the disadvantage of which is the excessive color saturation in the opinion of many.

Thank you for your attention, we hope the material turned out to be useful. If you find typos, inaccuracies or errors, write in the comments, we will fix it. We also recommend reading the article in which the AndroidAuthority resource experts presented their screen ratings.

Smartphone display technologies do not stand still, they are constantly being improved. Today there are 3 main types of matrices: TN, IPS, AMOLED. Often there are disputes over the advantages and disadvantages of IPS and AMOLED matrices, their comparison. But TN screens have been out of fashion for a long time. This is an old development that is now practically not used in new phones. Well, if it is used, then only in very cheap state employees.

Comparison of TN matrix and IPS

TN matrices appeared in smartphones first, so they are the most primitive. The main advantage of this technology is its low cost. The cost price of a TN display is 50% lower than that of other technologies. Such matrices have a number of disadvantages: small viewing angles (no more than 60 degrees. If more, the picture starts to distort), poor color rendering, low contrast. The logic of manufacturers to abandon this technology is clear - there are a lot of shortcomings, and they are all serious. However, there is one advantage: response time. In TN matrices, the response time is only 1 ms, although in IPS screens, the response time is usually 5-8 ms. But this is just one plus that cannot be put in opposition to all the minuses. After all, even 5-8 ms is enough to display dynamic scenes and in 95% of cases the user will not notice the difference between the response time of 1 and 5 ms. In the photo below, the difference is clearly visible. Pay attention to the color distortion at an angle on the TN matrix.

Unlike TN, IPS matrices show high contrast and are distinguished by huge viewing angles (sometimes even maximum). This is the most common type and is sometimes referred to as SFT matrices. There are many modifications of these matrices, so when listing the pros and cons, you need to keep in mind a specific type. Therefore, below, to list the advantages, we will keep in mind the most modern and expensive IPS-matrix, and to list the disadvantages, the cheapest.

Pros:

Maximum viewing angles.
High energy efficiency (low energy consumption).
Accurate color reproduction and high brightness.
Ability to use a high resolution, which will give a higher density of pixels per inch (dpi).
Good sun behavior.

Minuses:

Higher price compared to TN.
Distortion of colors with a large tilt of the display (nevertheless, viewing angles are not always maximum on some types).
Over-saturation and under-saturation.

Most phones today have IPS panels. Gadgets with TN displays are used only in the corporate sector. If a company wants to save money, then it can order monitors or, for example, phones for its employees at a lower price. They may contain TN-matrices, but no one buys such devices for themselves.

Amoled and SuperAmoled screens

Most often, SuperAMOLED matrices are used in Samsung smartphones. This company owns this technology and many other developers are trying to buy or borrow it.

The main feature of AMOLED matrices is the depth of black. If you put an AMOLED display and IPS next to it, then the black color on the IPS will seem light compared to AMOLED. The very first such matrices had incredible color reproduction and could not boast of color depth. Often the so-called acidity or excessive brightness was present on the screen.

But the developers at Samsung have fixed these flaws in SuperAMOLED screens. These have specific advantages:

Low power consumption;
The best picture compared to the same IPS matrices.

Disadvantages:

Higher cost;
The need to calibrate (adjust) the display;
Rarely can there be a different diode life.

The most TOP flagships are equipped with AMOLED and SuperAMOLED matrices due to best quality Pictures. The second place is occupied by IPS screens, although it is often impossible to distinguish between AMOLED and IPS matrix by the quality of the picture. But in this case, it is important to compare subtypes, not technologies in general. Therefore, you need to be on the alert when choosing a phone: often advertising posters indicate technology, and not a specific subtype of the matrix, and technology does not play a key role in the final quality of the picture on the display. BUT! If TN + film technology is indicated, then in this case it is worth saying “no” to such a phone.

Innovations

Removing the air gap OGS

Engineers present image enhancement technologies every year. Some of them are forgotten and not applied, and some make a splash. OGS technology is just that.

As a standard, the phone screen consists of a protective glass, the matrix itself and an air gap between them. OGS allows you to get rid of the extra layer - the air gap - and make the matrix part of the protective glass. As a result, the image appears to be on the surface of the glass, and not hidden under it. The effect of improving the display quality is obvious. Over the past couple of years, OGS technology has been unofficially considered the standard for any more or less normal phones. Not only expensive flagships are equipped with OGS screens, but also state employees and even some very cheap models.

Screen glass curvature

The next interesting experiment, which later became an innovation, is 2.5D glass (that is, almost 3D). The folds around the edges of the screen make the picture appear more voluminous. If you remember, the first Samsung smartphone Galaxy Edge made a splash - it was the first (or not?) to get a 2.5D glass display, and it looked amazing. An additional touch panel has even appeared on the side for quick access to some programs.

HTC tried to do something different. The company created the Sensation smartphone with an inwardly curved display. Thus, it was protected from scratches, although it was not possible to achieve more benefit. Now such screens cannot be found due to the strength of the already durable and resistant to scratches. protective glass Gorilla Glass.

HTC didn't stop there. The LG G Flex smartphone was created, which not only had a curved screen, but also the body itself. This was the "trick" of the device, which also did not gain popularity.

Stretchable or flexible screen from Samsung

As of mid-2017, this technology is not yet used in any phone on the market. However, Samsung is showing AMOLED screens in videos and presentations that can stretch and then return to its original position.

Photo of flexible display fromSamsung:

The company also presented a demo video, where the screen is clearly visible, arched by 12 mm (as the company itself claims).

It is possible that Samsung will soon make a very unusual revolutionary screen that will amaze the whole world. This will revolutionize display design. It's hard to even imagine how far the company will go ahead with this technology. However, it is possible that other manufacturers (Apple, for example) are also developing flexible displays, but so far there have been no such demonstrations from them.

The best smartphones with AMOLED matrices

Considering that SuperAMOLED technology was developed by Samsung, it is mainly used in models from this manufacturer. And in general, Samsung is leading the way in developing improved screens for mobile phones and TVs. We have already understood this.

By far the best display of any smartphone in existence is the SuperAMOLED screen in the Samsung S8. This is even confirmed in the DisplayMate report. For those not in the know, Display Mate is a popular resource that analyzes "inside and out" screens. Many experts use their test results in their work.

To define the screen in S8, I even had to introduce a new term - Infinity Display... It got this name due to its unusual elongated shape. Unlike its previous screens, Infinity Display has been seriously improved.

Here's a short list of the benefits:

Brightness up to 1000 nits. Even in the bright sun, the content will be well readable.
A separate chip for the Always On Display technology. The already economical battery now consumes even less battery power.
Picture enhancement function. In Infinity Display, content without an HDR component acquires it.
Brightness and color settings are automatically adjusted based on user preference.
Now there is not one, but two light sensors, which more accurately allows you to automatically adjust the brightness.

Even when compared to the Galaxy S7 Edge, which had a “reference” screen, the S8's display looks better (whites are really white on it, and warm colors on the S7 Edge).

But besides the Galaxy S8, there are other smartphones with screens based on SuperAMOLED technology. Basically, these are, of course, the models of the Korean company Samsung. But there are others as well:

Meizu Pro 6;
OnePlus 3T;
ASUS ZenFone 3 Zoom ZE553KL - 3rd place in the TOP of Asusu phones (located).
Alcatel IDOL 4S 6070K;
Motorola Moto Z Play, etc.

But it is worth noting that the hardware (that is, the display itself), although it plays a key role, is also important, as well as software, as well as minor software technologies that improve the quality of the picture. SuperAMOLED displays are famous primarily for the ability to widely adjust the temperature and color settings, and if there are no such settings, then the point of using these matrices slightly disappears.

And interesting features hidden from prying eyes.

Why are they hidden? Firstly, so that an inexperienced user does not break anything, and secondly, they are needed in very rare cases and are not used regularly. Today we will tell you about the engineering menu - a section for programmers, testers, geeks, experienced users and those who want to get into the very "heart" of the gadget's settings.

What is an engineering menu?

This is about special program or the system partition, which developers usually use at the final stage of configuring the software platform mobile device... With its help, they bring last changes into the operation of the device, check the functioning various sensors and testing the components of the system. Also hidden functionality service menu are used to obtain a large number system information, carrying out various tests (about 25 pieces) and setting any Android parameters- various sensors, mobile networks, equipment, etc.

Engineering, service or system menus are available on smartphones and tablets powered by the MediaTek processor. On the Qualcomm chipset, it is either truncated or absent altogether.

Attention! This section is intended for advanced users who are solely responsible for the consequences. Careless actions can be harmful file system and bring the smartphone out of their system.

How to enter the engineering menu?

To enter the engineering menu, in the dialing application you need to enter a special command: * # * # 3646633 # * # *. On some versions, the code * # * # 4636 # * # * or * # 15963 # * may work.

If the code engineering menu on Android did not work, or the phone does not have a dialing application (relevant for tablets that do not support calls), the MobileUncle Tools or MTK Engineering applications, which can be downloaded for free from Google Play, will help.

After entering a command or launching an application, the desired section will open. Perhaps it will close immediately - you need to activate the "Mode for developers" on the smartphone. To do this, go to the gadget settings, find the kernel version there and quickly click on it 5-10 times in a row.

Engineering menu functions

The engineering menu is divided into several categories, each of which will be described separately.

Telephony (Telephony). All settings concerning mobile communications... For example, you can activate or deactivate certain BandMode (frequencies for 2G / 3G / 4G), check the operation of SIM cards, and even turn off the transmission of mobile data in the background.
Connectivity: Configure Bluetooth, Radio Receiver, Wi-Fi and Wi-Fi CTIA settings. For example, in the radio settings, you can specify the radio wave, the type of antenna (you need to use headphones) and the sound format (mono or stereo). The radio will play straight from this section.
Hardware Testing. In this section, you can configure the operation of various components of the device, in simple words, hardware: the sound levels of the headphones and speakers, setting the microphone sensitivity, various camera parameters (aspect ratio of photos, adjusting ISO, HDR, focusing and much more), the operation of the touchscreen, sensors (calibration right there), and so on. This category is very large and global, in each section you need to understand separately and have serious knowledge and skills.
Location. In this category, you can set up GPS operation, see how many satellites the gadget has caught, and just test it.
Log and Debugging Here are the logs (logs) of the battery (percentage of charge, voltage, operating time, temperature) and other little-known functions to the common user.
Others. It also contains two functions unknown to the average user.

Engineering menu settings

The engineering menu opens up tremendous opportunities for customizing the phone, we will consider the most interesting in detail.

SAR Test - determining the level of harmful radiation from a smartphone or tablet.
Connections - testing available types wireless connection: Bluetooth, Wi-Fi, WLAN CTIA and FM receiver.

Audio - adjust the sound for speakers, microphone and headphones. How to increase the volume of Android through the engineering menu,.

Camera - configure various camera settings.

Turning on the current camera - the indicator of the working current of the camera is displayed (in our tablet it is 2 mA).
CPU stress test ( central processing unit) - checking the stability of its operation, identifying errors in the operation of the processor-memory channel, testing the cooling system and power supply of the processor.
Device Manager - Activate SMS automatic registration, manage configuration settings.
Disable detection — adjust the signal frequency.
Display - Sets the PWM metric cycle, which affects the perceived brightness of the screen by quickly turning the backlight on / off; backlight setting; the controller behind the vertical and horizontal lines of the display.

Wakefulness mode - activating it will not allow the device to "go" into sleep mode.
IO - control of data input / output operations.
Memory - detailed information about the RAM module.
To the degree - detailed information about the battery (the strange name of the section is most likely explained by errors in the automatic translation of names in the application, but there is no way to switch to English).
SD card test - the name of the tab speaks for itself.
Touch screen - checks the sensitivity and response of the display when pressed, and also sets its additional settings.
USB - testing the operation of the USB port.

UART / USB switch - switch between two data transfer modes.
Sensor - calibration (adjustment of clarity and sensitivity) of the touch screen. Standard methods.
Location - testing GPS performance and determining an exact location.
Battery log - detailed information about the battery and the ability to activate the recording of battery consumption information.

MTKLogger - collection of system logs (MobileLog, ModemLog and NetworkLog).
Temperature Gauge - Shows battery and processor.
Parameter Font - Change the font size.

When installing the application, some functions may not be available without.

Xiaomi engineering menu

Despite the fact that our test Redmi 2 is powered by a Qualcomm Snapdragon 410 processor, it also has the functionality we are interested in. To enter it, you need to tap the "Kernel version" item several times in a row.

The menu is represented by five items:

Automatic Test. Automatic test of all device parameters.
Single Item Test. Each of the 25 tests is taken separately. We will discuss this in detail below.
Test Report. Report on the passed texts and their results.
SW add HW version. Information about the version of the smartphone, IMEI and other numbers.
Device View. Smartphone hardware data.

Of course, the most interesting point is the Single Item Test, where you can pass a huge number of tests.

Let's make a reservation right away that there was no way to configure something in the device we tested - only a test of its operability. At the end of each procedure, you should note its status: successful (success) or not (failed).

Key - the performance of the physical buttons. Interestingly, it was not successful to pass it, since the smartphone goes out when the power button is checked.
Backlight - display brightness.

TouchPanel. The touch screen test includes two procedures: "Crossed calibration" and "Touch panel calibration". The first checks the so-called "swipes", the second - single taps on the screen. Easy way to calibrate the display.

TFlash. Testing the memory card with two results: either everything is in order, or the card is damaged.
Bluetooth. It searches for available devices.
SIM Card. Test for the presence of SIM cards.

Vibration. The gadget vibrates - everything is ok.
RTC (Real Time Clock) - the functioning of the built-in clock.
Speaker. Speaking dynamics testing. We did not understand how to pass it. We will be grateful if you can tell me in the comments.
Receiver. Translated as receiver, receiver, but music plays during testing.
Headset. Test 3.5mm jack for headphone detection, sound playback, and headset control button support.

LED. Notification indicator, everything is obvious here.
FM (radio). We press the search for a wave (Search), and if noise is heard in the headphones, then everything is working properly.
Camera. Everything is obvious: the test of the main and front optics, as well as the flash.
Battery. An informative section with information about the correct operation of the USB cable (charging), the state of the battery, its charge level and temperature. Similar data can be obtained over.

Wi-Fi. Finding nearby access points. There are no settings.

Torch (flashlight): on / off.
The loopback test includes a spoken microphone test. Click Recording first, then Playing.
LCD. Screen colors.
GPS. Detection of available satellites.
Gyro (gyroscope). Three parameters - X, Y, Z - change depending on the position of the device in space.
G-sensor (Accelerometer). Twist the gadget in all planes and turn it over. Three parameters must be ok.
Proximity Sensor Usually it is located near the earpiece and is designed to turn off the screen of the gadget during a call, thereby excluding accidental presses.
Optical and Magnetic Sensor (optical and magnetic sensors) - points we do not understand, share your knowledge in the comments.

After passing all the tests, you can go to the Test Report section. As you can see, our "animal" is in excellent shape and has passed all the tests, which is very pleasing.

conclusions

Above, we have listed the main sections of the engineering menu available on the tested devices. Now let's summarize what features the user gets during installation:

Formatting, rollback to factory settings.
Testing the operation of individual elements of a smartphone or tablet, for example, sensors, sensitivity touch display and calibration accuracy.
Detailed information about the device and its parts. For example, you can track the battery consumption since the last charge and view the statistics of the programs used.
Optimization of energy consumption. Alternatively, unnecessary frequency bands are turned off. In Russia, the standard indicators for operation in 2G and 3G networks are 900 and 1800 MHz, while in the USA - 850 and 1900 MHz.

Let's start with the fact that the image consists of the smallest elements - dots or pixels, and, depending on the diagonal of the display (and its physical size), the pixel can have a different size. There are also various pixel shapes - rectangular, square and even octagonal (the latter, however, happens only in plasma TVs). Well, the screen resolution is, in fact, the length in pixels of each side.

V modern smartphones you can find a resolution of 320x240 pixels. (the most budget models for children and older generation) up to 3840x2160 pix. (usually flagships). The larger the screen and the lower its resolution, the larger the pixels and the more blurred the image. For example, if you take a 6-inch screen with a resolution of 1280x720 pixels. (HD) and 1920x1080 pixels. (Full HD), then in the first case the picture will have a lower definition.

But is it worth chasing higher smartphone screen resolutions up to 4K? Yes, there are times when they are really required - for example, for immersion in virtual reality, where the display is almost close to the eyes and we distinguish the smallest pixels (about smartphones for VR). But with the rest of the content, everything is not so simple.

Pixel density

Here one cannot do without the concept of pixel density (PPI) - the resolution of the matrix, which is the main indicator of how clear the screen of a device is. PPI is calculated based on the diagonal resolution, its width and height, as well as the diagonal of the matrix in inches.

The more pixels fit on an inch of space, the smaller they will be, and the image smoother and sharper; the richer the color rendering, the better the brightness and contrast. Moreover, a high PPI makes fonts appear smoother on the screen, which improves the readability of text. For example, PPI at 2560x1440 pixels and 5.5 "diagonal will equal 534, and if you take a slightly larger screen (5.7"), then at the same PPI resolution will drop to 515, and the picture will lose clarity.

The average user heard about this concept in 2010 with the release of the iPhone 4 with Retina display... Then Apple said that the maximum pixels per inch that the human eye can distinguish is about 300. Columbia University also calculated the pixel density limit for the human eye, and it turned out to be slightly higher - 350 PPI. And in 2014, LG showed off three screens - with HD-resolution and density of 269 PPI, with Full HD and 403 PPI and with QuadHD (its then flagship LG G3) and 538 PPI. And the difference between them was noticeable, the picture on each subsequent screen looked clearer and more high-quality, and this was visible to the naked eye.

DisplayMate's Raymond Soneira claims that a person with perfect vision can "see" densities of up to 600 PPI, which makes the idea of 4K and 800 PPI smartphones not so crazy. Now the pixel density of modern flagships has already exceeded 500 PPI, but at some point, with the naked eye, users will no longer distinguish the advantages of a small, in fact, high-density smartphone screen.

Smartphones with the clearest screens

We did not trust the manufacturers at their word and independently calculated the pixel density for each of the smartphones. As it turned out, here the vendors did not exaggerate their merits and indicated the correct values (with corrections for rounding to the nearest integer), although, for example, many got excited with the “framelessness” (in our material).

Samsung Galaxy S9

Samsung Galaxy S9 has become the leader in screen clarity - its pixel density is 568 PPI. Due to the smaller diagonal (5.8 "), he bypassed his" brother "S9 +, which has the same resolution (2960x1440 pixels), but a larger diagonal (6.2"), and therefore received 531 PPI. The smartphone is made in a "frameless" design and, fortunately, without the now popular "bangs" - this is a plus for the manufacturer.

Users note that the display's colors are really very juicy (it's still a proprietary SuperAMOLED matrix), brightness and contrast are at a high level. It behaves well in the sun, does not glare and remains readable. By the way, the screen resolution can be reduced if desired, increasing the battery life.

LG G6 () is only slightly behind the leader with 565 PPI (diagonal - 5.7 ”, resolution - 2880x1440 pixels). LG called its screen FullVision, indicating that the user will have more space to watch videos, web pages and text. All data can be divided into two windows - a large number of applications support this function in LG smartphones. Although the IPS matrix is considered less bright than AMOLED, its quality was still positively appreciated by users. There is support for Dolby Vision and HDR 10.

By the way, the LG G7 ThinQ was recently introduced, which boasts a higher resolution - 3120x1440 pixels. But due to the increase in diagonal to 6.1 ", the pixel density of his screen is slightly lower - 563 PPI.

Although many have questions about the strategy of HMD Global, it turned out to be quite successful and took the third place on the list with a result of 554 PPI. Even though its screen has a lower resolution (2560x1440 pixels) than smartphones that are in the top lower, it benefits from a small display diagonal of 5.3 inches.

The design, however, is not at all bezel-less - there are very noticeable stripes at the top and bottom of the display. But we liked the quality of the screen - it is bright, contrasting, with natural color rendition and good viewing angles. And in the evening you can activate night mode so that your eyes do not get tired.

Vivo xplay 6

Vivo Xplay 6 is quite far behind in terms of indicators from the top three - it has 538 PPI. But for the fact that he got here, one should thank the average screen diagonal (5.46 ") and high resolution (2560x1440 pixels.). In appearance, it immediately becomes clear who the designers drew inspiration from - the curved display at the edges repeats Samsung Galaxy Note 7. And the AMOLED matrix itself is also from a South Korean manufacturer, so it is not surprising that the screen produces a high-quality picture.

Curved edges of the screen are made for a reason - there is a panel that is completely similar to the Edge from Samsung. The display resolution can also be downgraded to Full HD to increase autonomy, but the settings do not allow you to calibrate the colors.

Google Pixel 2 XL

Another "clear smartphone" is the interesting, but not too popular last year's flagship Google Pixel 2 XL. It has a large diagonal (6 ") and a high screen resolution (2880x1440 pixels), and a pixel density of 537 PPI. The POLED matrix made by LG is installed, which in some places is inferior to SuperAMOLED from Samsung, but there is no inherent acidity of the shades. , if you deviate from the right angle, then the colors begin to invert and go into blue.

Also at the very beginning of sales there were complaints about graininess and the appearance of artifacts, but the manufacturer assures that this should have been fixed. software updates... Many more users are unlucky, and in some places the screen of their devices goes into a pink shade.

The same pixel density (537 PPI) is also found in the second LG smartphone on our list - the LG V30 +. Like the Google Pixel 2XL, it has a 6 "diagonal and a resolution of 2880x1440 pixels. The matrix type is again POLED (On-Cell touch). But, apparently, LG still makes better displays for its flagships.

The screen here is bright, with high-quality anti-reflective coating and balanced colors. There are separate profiles for displaying color - for surfing the Internet, watching movies, reading books. HDR is also supported, and the Always-on-display, which is present on all modern OLED screens, has different variants settings: shutdown time, brightness, content display, etc.

HTC U11 Plus

And the third in a row a smartphone with a 6-inch screen, a resolution of 2880x1440 pixels and a pixel density of 537 PPI is HTC U11 Plus. The proprietary Super LCD 6 matrix, according to the manufacturer, provides natural color reproduction. Such a screen is very popular with those for whom Samsung displays are too bright. And for lovers of juicy shades, the screen will seem too faded, but the eyes do not get tired of it.

The smartphone has an analogue of the Always-on-display function, but since This is an LCD matrix, only the clock and information icons will be displayed, and the battery will drain much faster. An interesting mode "With gloves" with increased screen sensitivity, as well as the ability to select a color profile and separately change the settings in it.

There is support dynamic range HDR10, but only at the hardware level. With new system updates, it should appear programmatically.

Tonino Lamborghini Alpha one

Together with the next smartphone on the list, Tonino Lamborghini Alpha one, we are invited to the premium segment, offering along with an impressive appearance(body made of "liquid metal" and natural leather trim) are also worthy of characteristics. 5.5 inches diagonal and 2560x1440 pixels create a pixel density of 534 PPI.

The AMOLED matrix demonstrates good contrast and saves battery power, the brightness margin is also decent. As with all AMOLED screens, colors are not inverted at different viewing angles. You can play around with the color temperature and saturation settings if you like.

Huawei P10 Plus

Huawei P10 Plus has the same screen characteristics as Tonino Lamborghini (except that the matrix is IPS), and therefore demonstrates 534 PPI in the same way.

There was a smartphone, and we noted that the display has good brightness and a decent anti-reflective coating - it can be used comfortably in the sun. Viewing angles are wide, and you can adjust the color temperature yourself or choose a preset profile.

ASUS ZenFone AR ZS571KL

Well, the ASUS ZenFone AR ZS571KL smartphone is specially "sharpened" for virtual and augmented reality, and therefore it has a large and clear screen with a diagonal of 5.7 inches and a resolution of 2560x1440 pixels, and its pixel density is 515 PPI.

The top of the screen is covered with 2.5-D Gorilla Glass 4. You can turn the device into a VR helmet using its own packaging - it opens, a smartphone is inserted there - and forward, towards virtual adventures. True, VR mode drains the battery very quickly - just like games, by the way.

	Estimated PPI	Declared PPI	Display	Price
Samsung Galaxy S9	567,53	568	Super AMOLED 5.8 " 2960х1440 pix.	i 59 990
Lg g6	564,90	565	2880х1440 pix.	from i 37 990
Nokia 8	554,19	554	2560x1440 pix.	i 29 990
Vivo xplay 6	537,95	538	2560x1440 pix.	from i 35 990
Google Pixel 2 XL	536,66	537	2880х1440 pix.	from i 48 990
LG V30 +	536,66	537	2880х1440 pix.	i 59 990
HTC U11 Plus	536,66	537	2880х1440 pix.	i 49 990
Tonino lamborghini Alpha one	534,04	534	2560x1440 pix.	i 149,000
Huawei P10 Plus	534,04	534	2560x1440 pix.	from i 32 190
ASUS ZenFone AR	515,3	515	2560x1440 pix.	i 59 990

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