Different sensors perform different quantitative measurements and convert physical indicators into signals that a mobile device can recognize.

on the Snapdragon 400 platform with LTE support and a “smartphone” display aspect ratio

Reviews of Wexler products have already appeared several times on the pages of our website. Mostly these were e-books, but one day a smartphone also showed up. Today we will get acquainted with the company's tablets. There is a good reason for this: Wexler Mobi 7 LTE is the first tablet in the manufacturer’s range with support for fourth generation networks.

Video review

To get started, we suggest watching our video review of the Wexler Mobi 7 LTE tablet:

Specifications Wexler Mobi 7 LTE

• Model Number: MOBI 7 LTE
• SoC: Qualcomm Snapdragon 400 MSM8926
• CPU: 4 cores Cortex-A7 (ARMv7-A) @1.2 GHz
• GPU: Adreno 305
• Display: IPS, 7″, 1280×720, 210 ppi
• RAM: 1 GB
• Permanent memory: 16 GB
• MicroSD memory card support (up to 128 GB)
• Cameras: 5 MP rear with flash, 2 MP front
• Wi-Fi 802.11 b/g/n
• Supports LTE FDD, LTE TDD, LTE Cat4 (up to 150 Mbps), WCDMA (DC-HSPA+), CDMA1x, EV-DO Rev. B, TD-SCDMA and GSM/EDGE with telephone functions
• Bluetooth, GPS/Glonass/Beidou
• Headset jack 3.5 mm, Micro-USB, Micro-SIM
• Operating system: Android 4.4.2
• Battery capacity: 3500 mAh
• Dimensions: 188×98×8.9 mm
• Weight: 274 g

The Megafon Login 3 tablet, also based, by the way, on a single-chip Snapdragon system, was used as the “lower threshold” for comparison.

* - at the time of writing the corresponding article

Due to the “smartphone” aspect ratio, the Wexler tablet turned out to be narrower and lighter. In addition, it stands out for its installed SoC - we have not yet seen the 400th Snapdragon series in tablets.

Contents of delivery

The tablet comes with a Micro-USB cable, a power adapter (5V, 2A), and a tool to remove the SIM tray.

Design

Wexler Mobi 7 LTE opens a new series of Wexler Mobi tablets. We cannot say anything regarding its further development, but, judging by the name, it will feature hybrid devices with advanced communication capabilities and a compact body.

To reduce dimensions, the manufacturer narrowed the screen, using a resolution of 1280×720 instead of 1280×800. It would be possible to further reduce the side margins, but Wexler did not do this.

The Android touchpad is moved outside the display. On the left is the context menu key, in the middle is to return to the main screen, and on the right is to return to the previous level. To call up a list of recently opened programs, use a long press on the center button.

The case is made according to a standard design for budget tablets: there is a metal panel in the middle, and plastic inserts at the edges. But in Wexler Mobi 7 LTE they do not contrast, which gives the device a more serious look. The rear panel is resistant to fingerprints and provides good grip on the palm.

At the top we see the rear camera with flash, and on the other side there are the main speaker holes. It provides modest sound quality by tablet standards and is muffled if the device is placed on a flat surface.

On the top left side there are mechanical buttons for turning off and adjusting the volume, with a short and clear stroke.

From the same side, using a standard tool, the tray for Micro-SIM and microSD cards is removed.

On the top edge, in one corner with the camera and buttons, all the tablet’s few connectors are collected - Micro-USB and a headset jack (3.5 mm). There is a microphone hole in the corner at the bottom.

The build quality of the tablet deserves no complaints: all the parts fit neatly, there is no play. The device may not be sleek enough to be used as a smartphone, but due to its size and shape, it can work in such a scenario without any problems.

Screen

The front surface of the screen is made in the form of a glass plate with a mirror-smooth surface that is scratch-resistant. Judging by the brightness of reflected objects, The anti-glare properties of the screen are no worse than those of Google Nexus 7 (2013) (hereinafter simply Nexus 7). For clarity, here is a photograph in which a white surface is reflected in the switched off screens of both tablets (Wexler Mobi 7 LTE is on the right; in all the following comparative photographs, the tested tablet is located above the Nexus 7):

The screen of the Wexler Mobi 7 LTE is slightly darker - the brightness in the photograph is 105 versus 110 for the Nexus 7. The tripling of reflected objects in the Wexler Mobi 7 LTE screen is very weak, this indicates that there is a gap between the outer glass (also known as the touch sensor) and the surface matrix there is no air gap ( OGS type screen - One Glass Solution). Due to the smaller number of boundaries with very different refractive indices (glass/air type), such screens look better in conditions of strong external illumination, but their repair in the case of cracked external glass is much more expensive, since the entire screen has to be replaced. On the outer surface of the screen, Perhaps there is a special oleophobic (grease-repellent) coating, but its effectiveness is low, so fingerprints are difficult to remove and appear quickly.

When manually controlling the brightness and displaying the white field on the entire screen, its maximum value was about 305 cd/m², and the minimum - 6.2 cd/m². The maximum brightness is low, however, given the excellent anti-glare properties, readability even on a sunny day outdoors should be at a more or less acceptable level. In complete darkness, the brightness can be reduced to a comfortable value. In stock automatic brightness adjustment based on light sensor(it is located to the right and below the front speaker slot). In automatic mode, as external lighting conditions change, the screen brightness both increases and decreases. In complete darkness, the auto-brightness function reduces the brightness to 6.2 cd/m² (a bit dark), in an artificially lit office (approximately 400 lux) it sets to 180 cd/m² (normal), in a very bright environment (corresponding to lighting on a clear day outdoors , but without direct sunlight - 20,000 lux or a little more) increases to the maximum - up to 305 cd/m² (which is what is needed). As a result, the auto-brightness function works quite adequately. At any brightness level, there is virtually no backlight modulation, so there is no screen flickering.

This tablet uses IPS type matrix. The microphotographs show a typical IPS subpixel structure:

For comparison, you can see the gallery of microphotographs of screens used in mobile technology.

The screen has good viewing angles without inverting shades (except for the very, very dark ones when the gaze is deviated to the left) and without a significant color shift even with large deviations of the gaze from perpendicular to the screen. For comparison, here are photographs in which the same images are displayed on the screens of the Nexus 7 and the tested tablet, while the brightness of both screens is set to approximately 200 cd/m², and the color balance on the camera is forcibly switched to 6500 K. Test picture perpendicular to the screens:

The color balance is slightly different, the colors are saturated, but the picture on the Wexler Mobi 7 LTE is very bright. And a white field:

We note a significant unevenness of brightness and color tone - the Wexler Mobi 7 LTE has strong flare at the edges. Now at an angle of approximately 45 degrees to the plane and to the side of the screen:

It can be seen that the colors and brightness balance did not change much for both tablets, but for the Wexler Mobi 7 LTE the contrast decreased to a greater extent due to brightening of the blacks and a significant decrease in the brightness of the picture. Then the white field:

The brightness at an angle for both tablets decreased noticeably (by at least 5 times, based on the difference in shutter speed), but in the case of the Wexler Mobi 7 LTE, the screen brightness at this angle is much lower. When deviated diagonally, the black field is lightened to an average degree (given the general drop in brightness, this is not an advantage) and acquires a purple or red-violet hue. A photo from the Nexus 7 shows this for comparison (the brightness of the white areas in the perpendicular direction is approximately the same for both tablets!):

And from another angle:

When viewed perpendicularly, the uniformity of the black field is disgusting - there are many illuminated areas along the edge:

The contrast (approximately in the center of the screen) is high - 950:1. The black-white-black response time is 22 ms (9.5 ms on + 12.5 ms off). The transition between halftones of gray 25% and 75% (according to the numerical value of the color) and back takes a total of 40 ms. The gamma curve, constructed using 32 points with equal intervals based on the numerical value of the shade of gray, did not reveal any blockage in either the highlights or the shadows. The exponent of the approximating power function is 1.47, which is much lower than the standard value of 2.2 (which is why the image is brightened), while the real gamma curve deviates greatly from the power law:

Color gamut is almost equal to sRGB:

The spectra show that the matrix filters moderately mix the components with each other:

As a result, visually the colors have a natural saturation. The balance of shades on the gray scale is a compromise, since the color temperature is not much higher than the standard 6500 K, but the deviation from the blackbody spectrum (ΔE) is more than 10, which is considered a bad indicator even for a consumer device. However, color temperature and ΔE change little from hue to hue - this has a positive effect on the visual assessment of color balance when there is no standard for comparison. (Dark areas of the gray scale can be ignored, since color balance there is not very important, and the error in measuring color characteristics at low brightness is large.)

Let's summarize. The screen has not very high maximum brightness, but has excellent anti-glare properties, so readability even in conditions with very bright external lighting is likely to be more or less acceptable. In complete darkness, the brightness can be reduced to a comfortable level. It is also possible to use a mode with automatic brightness adjustment, which works adequately at least in the area of ​​medium and high illumination. The advantages of the screen include the absence of flickering and air gaps in the layers of the screen, as well as a color gamut close to sRGB and a good - when visually assessed - color balance. Significant disadvantages include a weak oleophobic coating, significant unevenness of the white and black fields, significant image brightening due to a non-standard gamma curve, and an excessive drop in image quality when viewed at an angle. Overall, the screen quality is average.

operating system

Wexler Mobi 7 LTE runs Android 4.4.2. There is an over-the-air firmware update function. And what’s most interesting is that we actually received an update to build 1.1.7, on which testing was carried out.

Android touch buttons are moved outside the display, so they are not displayed on the screen. Swiping from the top from any point brings up a list of alerts, and to go to the settings icons you need to make an additional click, which is not very convenient. The standard set of applications is expanded with free utilities.

Of the 16 GB of internal memory, 12.7 GB is available to the user. Turning on the tablet takes approximately 36 seconds. No significant problems were identified in the operation of the operating system; only occasionally the animation slowed down when scrolling through Google Play and loaded sites.

Platform and performance

Introduced in June last year, the Qualcomm MSM8926 single-chip system, belonging to the Snapdragon 400 series, was previously seen only in smartphones: it is equipped with the Sony Xperia C3, a couple of Nokia Lumia 830 and Lumia 735, as well as the LTE version of Asus Zenfone 5. This SoC includes four ARM Cortex-A7 cores with a frequency of 1.2 GHz. These are Cortex-A7 cores, and not the original Qualcomm Krait, usually used in the manufacturer’s processors. Adreno 305 is responsible for graphics.

The main feature of the MSM8926 is the built-in modem that supports 4G networks. In addition, it supports Qualcomm iZat proprietary navigation and fast charging (looking ahead, let’s say that in our case this did not affect the charging time). The Wexler Mobi 7 LTE has one gigabyte of RAM.

Let's start with browser tests

Browser benchmarks show that the difference between the Snapdragon 200 and Snapdragon 400 is very small. For these tests, the number of cores is not particularly important.

In Geekbench 3, the Wexler tablet performs almost identically to the Ritmix with similar CPU specs. But in the complex Antutu, our hero easily bypasses it, and even more so Megafon Login 3, approaching last year’s Google Nexus 7.

Superiority over Ritmix is ​​ensured in tests of RAM speed and 2D video performance, and Megafon logically loses also in terms of processor performance (Antutu is sensitive to multi-core).

Judging by the gaming tests, the Snapdragon 400 is not far behind the Snapdragon 200, as evidenced by the GFXBenchmark offscreen tests. Obviously, the MSM8926 is in demand primarily due to its built-in functional modem, rather than performance (and therefore is used most often in inexpensive smartphones).

Nevertheless, the tablet copes well with most modern games, but there are still not enough resources for some, as can be seen in the table.

Video playback test

We did not find the MHL interface or Mobility DisplayPort in this tablet, so we had to limit ourselves to testing the output of video files on the screen of the device itself. To do this, we used a set of test files with an arrow and a rectangle moving one division per frame (see “Method for testing video playback and display devices. Version 1 (for mobile devices)”). Screenshots with a shutter speed of 1 s helped determine the nature of the output of frames of video files with various parameters: the resolution varied (1280 by 720 (720p) and 1920 by 1080 (1080p) pixels) and frame rate (24, 25, 30, 50 and 60 frames/ With). In the tests we used the MX Player video player in the “Hardware” mode. The test results are summarized in the table:

Information about the make, model, and alternative names of the specific device, if available.

Design

Information about the dimensions and weight of the device, presented in different units of measurement. Materials used, colors offered, certificates.

SIM card

The SIM card is used in mobile devices to store data that certifies the authenticity of mobile service subscribers.

Mobile networks

A mobile network is a radio system that allows multiple mobile devices to communicate with each other.

Mobile communication technologies and data transfer speeds

Communication between devices on mobile networks is carried out using technologies that provide different data transfer rates.

Operating system

An operating system is a system software that manages and coordinates the operation of hardware components in a device.

SoC (System on Chip)

A system on a chip (SoC) includes all the most important hardware components of a mobile device on one chip.

Built-in memory

Each mobile device has built-in (non-removable) memory with a fixed capacity.

Memory cards

Memory cards are used in mobile devices to increase the storage capacity for storing data.

Screen

The screen of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.

Sensors

Different sensors perform different quantitative measurements and convert physical indicators into signals that a mobile device can recognize.

Main camera

The main camera of a mobile device is usually located on the back of the body and is used for taking photos and videos.

Additional camera

Additional cameras are usually mounted above the device screen and are used mainly for video conversations, gesture recognition, etc.

Audio

Information about the type of speakers and audio technologies supported by the device.

Radio

The radio of the mobile device is a built-in FM receiver.

Location determination

Information about the navigation and location technologies supported by your device.

WiFi

Wi-Fi is a technology that provides wireless communication for transmitting data over close distances between various devices.

Bluetooth

Bluetooth is a standard for secure wireless data transfer between various devices of different types over short distances.

USB

USB (Universal Serial Bus) is an industry standard that allows different electronic devices to exchange data.

Headphone jack

This is an audio connector, also called an audio jack. The most widely used standard in mobile devices is the 3.5mm headphone jack.

Connecting devices

Information about other important connection technologies supported by your device.

Browser

A web browser is a software application for accessing and viewing information on the Internet.

Video file formats/codecs

Mobile devices support different video file formats and codecs, which respectively store and encode/decode digital video data.

Making a high-quality budget tablet is, in a certain sense, more difficult than making a flagship device. Judge for yourself: it’s enough to stuff an expensive gadget with the most modern technical stuffing, embellish it with software tricks, set almost any price - and you’re done! It’s a different matter to design an inexpensive device: if you improve something, you’ll have to save money; established one thing - the budget is not enough for the other. In other words, the manufacturer has to constantly look for a balance between the capabilities of the gadget and its cost. And this is very, very difficult. WEXLER has made another attempt to find that golden mean - and it should be very interesting. After all, how many tablets do you know that cost ten thousand rubles that can make calls and transmit data on LTE networks?

⇡ Appearance and ergonomics

Perhaps the main advantage of WEXLER.MOBI 7 LTE is that it is a very compact device. Of course, it is unlikely to be able to completely replace a mobile phone, but in terms of its dimensions it is not far from some Sony Xperia Z Ultra or Samsung Galaxy Mega 6.3. The latter even seems plumper and larger due to the greater width of the body. The frames around the display of the WEXLER tablet are quite thin, which is why the device turns out to be elongated, oblong - this hints that it is more convenient to use the tablet in portrait orientation rather than landscape. The thickness of the case is acceptable - 8.9 millimeters, and the weight of the device does not exceed 270 grams.

WEXLER.MOBI 7 LTE - front panel

There are no design flourishes in the exterior of the device - everything here is quite strict and to the point. WEXLER followed a proven path and did not reinvent the wheel: the layout of keys and interfaces is quite standard and convenient. At the top of the front panel there is a slot for the earpiece and the lens of the front, two-megapixel camera. The panel is covered with protective glass that is resistant to scratches and other minor damage.

WEXLER.MOBI 7 LTE with screen on

At the bottom of the front panel there are three standard hardware buttons - “Menu”, “Home” and “Back”. They do not have a backlight, so in the dark you have to use them by touch, which is not very convenient.

WEXLER.MOBI 7 LTE - physical keys on the front panel

Even though the tablet's body is made of aluminum, it lacks some rigidity. For example, when you squeeze the sides of the device, characteristic white spots appear on the matrix in quite large quantities - obviously, the display is not very well protected. The case itself cracks noticeably when tested for twisting and breaking, which is usually not typical for tablets made of metal.

WEXLER.MOBI 7 LTE - rear panel

On the “back” of the device there is a main five-megapixel camera lens with an LED flash. An external, not very loud speaker is located on the lower part of the rear panel. If you use WEXLER.MOBI 7 LTE as a mobile phone, it is better to activate vibration alert so as not to miss a call.

WEXLER.MOBI 7 LTE – external speaker

The tablet's body is non-separable - the card slots are located on the right side in a separate slot that can be opened with a regular needle. Next to it are the power and volume keys.

WEXLER.MOBI 7 LTE - hardware keys

The Micro-USB 2.0 interface along with a 3.5 mm audio jack for a wired headset is located at the top end. The remaining sides of the body are empty.

WEXLER.MOBI 7 LTE - side ends

⇡ Technical specifications

Advantages: - Good IPS screen, not retina, of course, but acceptable clarity, viewing angles are quite large, the oleophobic coating is weak, but if your hands are not wet, the finger glides normally. There is no air gap. The brightness is adjustable over a wide range, and it is convenient to use in the dark and in bright light. There seems to be no flickering (backlight modulation).

Performance is also good, GTA SA runs smoothly at minimum settings, and fps does not drop much. In Antutu I gained about 18 thousand.

The RAM on paper is not enough - 1 gig, but apparently a gigabyte is not a gigabyte, I also have a gigabyte of RAM on my phone, and there is so much Samsung rubbish that there is not enough of it at all, it is not even properly cleaned. In Veksler, on the contrary, the RAM is cleaned with a bang using the utility - 500 MB is free at startup, if you often launch and close applications, then after each cleaning 350-400 MB are free.

Well assembled, parts fit tightly. Comfortable to hold with one hand.

Looks decent, from the back, if the wexler inscription is closed, then friends may think that this is an Iphone 7))

The price of 10 thousand is quite justified if the shortcomings described below are not confusing. Disadvantages: - The first and most important disadvantage is the return button (central touch). In theory, when held for a long time, it should open a list of recently running applications. But in practice, it doesn’t always do this (or rather, it almost always doesn’t); instead, it works as a multiple transition to the desktop. It’s very inconvenient when you work with several applications (or documents), how to switch between them? I hope that this can be corrected programmatically and that such garbage will no longer be present in the next updates. (and by the way, judging by the discussions on the forums, this is a common problem with this model).

Case materials. It would be better if they made it plastic, Wi-Fi reception is worse than on my smartphone. And the paint will peel off the metal faster along with the spraying.

There is no information about updates, but most likely Android 5.0 will not be on this tablet.

There is light at the edges of the screen (especially on the left). It’s a small thing, of course, but it’s noticeable against a black background.

I haven’t tested the 4g connection, but I tested Skype over Wi-Fi, and the problem is that the interlocutor on the other device hears himself, since on this tablet the sound from the speaker apparently goes into the microphone. Although the problem may be in this instance, since no one has written about this jamb before.

The camera is bad, but if you wipe the lens with a napkin :) the quality will improve a little :)) It gets dirty with fingerprints too quickly. In principle, it is suitable for photographing documents in good lighting.

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