Guru GXGSmart, the Taiwanese tech company, are starting to prove that they are a quality manufacturer. They are mostly popular for their budget devices, but interest in the company is growing rapidly. The reason behind this is obvious – in order to impress consumers and prove to them that it isn’t necessary to spend $600 or more to have a high-end smartphone, companies like GSmart (a Gigabyte branch) give 110% of themselves when designing a new device.

If we are to judge from the specifications of the device that we are about to test today, it will only serve as proof for their dedication. The aforementioned smartphone is called GSmart Guru GX, and its specs are a 64-bit, 8-core Qualcomm Snapdragon 615 CPU, 5-inch IPS screen with Full HD resolution and 2 gigs of RAM.

Contents


Video Review

What’s in the box?

The thing that makes an impression when you look at the box is its design. It isn’t shaped like an ordinary smartphone container, quite the opposite – it looks like a book. The box is so beautiful and interesting that you might almost forget that there is a smartphone inside. Speaking of the inside, when you flip the case/book open, you will see an inscription from the GSmart team on the inner side of the top cover:

“Handcrafted with the greatest attention to detail and quality, Guru GX is a truly remarkable device. We hope you will enjoy this unique experience.”

A page with the GSmart Guru GX logo is what separates the cover from the device. Inside the box you will find the smartphone itself. Underneath it are some manuals, and next to it -two black boxes. The larger box contains the USB cable and charger, while the smaller one has a SIM eject tool on top and headphones inside.

GSmart Guru GX box combined

Design and construction

The design of a phone is one of the decisive factors when buying a new device. GSmart have put a lot of time and thought into the appearance of the Guru GX. When you get your hands on this smartphone for the first time, its weight and size will pleasantly surprise you, as it is one of the thinnest and lightest devices in its category, measuring at 7mm and 115g. The device is made out of polycarbonate. The back of the Guru GX is smooth, and it looks and feels very good. The camera, LED flash and speaker are located there, along with the GSmart logo, some stickers and device information. The face camera, great for taking selfies,  is located at the top-right. To the left of it, there’s the earpiece and the proximity sensor, and at the bottom, under the screen, you will find three capacitive buttons.

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The bottom and top sides of the phone are pretty clean. There’s nothing but a micro USB port and headphone jack on them, respectively. We can’t say the same about the right side, however. Not only does it have two SIM card trays, but also, a fancy looking power button, and the whole plastic has been elegantly remodeled to resemble high-quality aluminum, adding to the refined design of the device. We find the same remodeled plastic on the left side, where the volume rocker is. The overall design is simple and elegant, the device feels comfortable in the hand and easily fits in pockets.

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Display

GSmart Guru GX has a capacitive multi-sensor IPS display with WLED backlight, built on One-Glass-Solution (OGS) technology. To protect it from harm, the manufacturer has added Gorilla Glass 3.

Before we continue with display details, we would like to take a minute of your time to talk about the OGS technology. In One-Glass-Solution displays the capacitive sensors and the electricity conductive layer are placed directly on the protective glass. This makes the panel lighter, thinner and translucent. The cost of its production is reduced (by roughly 30%), but the quality requirements are increased. In the image below we’ve showed an element of a capacitive touch panel. The operational principle of a capacitive touch panel consists of changing the capacity at the point of touch on an electrostatic grid located inside the display, and the subsequent calculation of the coordinates by a micro controller.

The following graph illustrates the difference between the OGS method and a more conventional technology.

OGSENG
OGS1 copy

The diagonal of the display is 5 inches (12.7 cm), with an aspect ratio of 16:9. The resolution is 1920×1080 and the pixel pitch is 0.577×0.577 mm, which amounts to 441 PPI. The screen becomes “Retina” when you look at it from distance of 20 cm or more, which means that you can enjoy your favorite videos, games, as well as our interesting reviews in very high detail.

On the microscope photo below you can see the sub-pixels (they seem similar to Sony displays).
micr

GSmart Guru GX offers wide viewing angels, with only a slight image difference at 45°, as you can see in the image below.

Angels Miix 3 Ready

The measured average maximum screen brightness is 315 cd/m2; that is enough to give you a clear image in bright rooms and outdoor conditions. In direct sunlight, however, the images will be a bit dimmed. The contrast ratio is 955:1, which is not a bad result.

Brightness-GSmart Guru GX

Color Gamut Coverage

GSmart Guru GX’s display covers 94% of the sRGB and 70% of the Adobe RGB color gamuts.
CIE-GSmart Guru GX

The gamma curve matches the optimal one.

Gamma-GSmart Guru GX

Color reproduction

The colors of GSmart Guru GX are accurate. The average deviation of DeltaE at maximum brightness is 1.77.

DeltaE-GSmart Guru GX

On the color map below you can see the conformity to the sample colors.

DisplayColor-GSmart Guru GX

Pulse-Width Modulation (PWM)

GSmart Guru GX’s display does not put a strain on the users eyesight with pulse-width modulation of the emitted light, regardless of the position of the brightness slider.

PWM-GSmart Guru GX

Gaming capabilities

The graph below illustrates the reaction time of the pixels from “Black” to “White” and “White” to “Black”, for levels from 10% do 90% and vice-versa. It is published by the panel manufacturers, so it is suitable for comparison and rating.
We measured that the Fall Time + Rise Time is 16 ms, which is not much higher than a TN matrix display (a common result for that is 10 ms) (the lower the result – the better).

ResponceTime-GSmart Guru GX

Display comparison

If we assume a distance of 38cm (~15 in) between the human eye and the smartphone’s display to be optimal, then normal (20/20) vision would require a pixel density of at least 230ppi in order to interpret an image as perfectly detailed.

Smartphones Results (ppi) Result
difference
Price
GSmart Guru GX 5-inch, IPS, 1080 x 1920 pixels, Gorilla Glass 3 441 0 % Check price
Motorola Moto G (G2, 2014) 5-inch, IPS, 720 x 1280 pixels, Gorilla Glass 3 293.72 – 33.4 % Check price
Lenovo P70 5-inch, IPS, 1280 x 720 pixels, 293.72 – 33.4 % Check price
MEIZU m1 note 5.5-inch, IPS, IGZO, 1080 x 1920 pixels, Gorrila Glass 3 400.53 – 9.18 % Check price
Lenovo Vibe Shot 5-inch, IPS, 1080 x 1920 pixels, Gorilla Glass 3 440.58 – 0.1 % Check price

Higher panel brightness is of key importance for visual comfort when working outside or in a brightly lit room.

Smartphones Results (cd/m2) Result
difference
Price
GSmart Guru GX 5-inch, IPS, 1080 x 1920 pixels, Gorilla Glass 3 315 0 % Check price
Motorola Moto G (G2, 2014) 5-inch, IPS, 720 x 1280 pixels, Gorilla Glass 3 349 10.79 % Check price
Lenovo P70 5-inch, IPS, 1280 x 720 pixels, 458 45.4 % Check price
MEIZU m1 note 5.5-inch, IPS, IGZO, 1080 x 1920 pixels, Gorrila Glass 3 500 58.73 % Check price
Lenovo Vibe Shot 5-inch, IPS, 1080 x 1920 pixels, Gorilla Glass 3 558 77.14 % Check price

Delta E (CIE 2000) is a CIE measurement unit of color difference. Higher values indicate that the display produces less accurate colors. (lower results are desirable).

Smartphones Results Result
difference
Price
GSmart Guru GX 5-inch, IPS, 1080 x 1920 pixels, Gorilla Glass 3 1.77 0 % Check price
Motorola Moto G (G2, 2014) 5-inch, IPS, 720 x 1280 pixels, Gorilla Glass 3 1.43 19.21 % Check price
Lenovo P70 5-inch, IPS, 1280 x 720 pixels, 2.84 – 60.45 % Check price
MEIZU m1 note 5.5-inch, IPS, IGZO, 1080 x 1920 pixels, Gorrila Glass 3 3.15 – 77.97 % Check price
Lenovo Vibe Shot 5-inch, IPS, 1080 x 1920 pixels, Gorilla Glass 3 3.86 – 118.08 % Check price

The coverage of the sRGB color gamut, introduced as a standard for the Web, shows the percentage of colors used on the Web that can be displayed on the screen of the device being tested (higher values are better).

Smartphones Results (%) Result
difference
Price
GSmart Guru GX 5-inch, IPS, 1080 x 1920 pixels, Gorilla Glass 3 94 0 % Check price
Motorola Moto G (G2, 2014) 5-inch, IPS, 720 x 1280 pixels, Gorilla Glass 3 91 – 3.19 % Check price
Lenovo P70 5-inch, IPS, 1280 x 720 pixels, 95 1.06 % Check price
MEIZU m1 note 5.5-inch, IPS, IGZO, 1080 x 1920 pixels, Gorrila Glass 3 92 – 2.13 % Check price
Lenovo Vibe Shot 5-inch, IPS, 1080 x 1920 pixels, Gorilla Glass 3 100 6.38 % Check price

Conclusions

The display of GSmart Guru GX has a high resolution, accurate colors, decent contrast and sRGB color gamut coverage. The emitted light doesn’t harm your eyesight. The maximum brightness levels aren’t the highest, but the only time that you will have any issues with that will be in direct sunlight.

Sound

Our measurements show unevenness in the frequency responce from +12/-6db in the range of 500 Hz to 10 kHz. The graph reaches its peak at 1.8 kHz and collapses at 2.6 and 7 kHz. Subjective playback shows deteriorated sound in the upper register. The device’s sound quality is not good.

Sound-GSmart Guru GX

Battery life

The battery found in GSmart Guru GX has a capacity of 2300 mAh. This is within the normal range for middle class devices. We can’t conceal our disappointment, as we would have preferred a more powerful unit for the device, but it’s obvious that it has been sacrificed to achieve this thin and classy design. We tested the battery in our usual manner – phone calls, web browsing, video playback and gaming. The condition of the tests were as they have always been – 120cd/m2 screen brightness, turned on Wi-Fi, turned off GPS and Bluetooth.

Talk time

In this test the brightness setting does not apply, because the screen is turned off due to the proximity sensor.

Talk Time Guru GX

The result we got is 565 minutes (9 hours and 25 minutes).

Web browsing

We used our own automatic Wi-Fi browsing script, which goes through over 70 websites.

Web Surfing Guru GX

A decent result, considering the battery capacity – 447 minutes (7 hours and 27 minutes).

3D gaming

We used Epic Citadel to simulate 3D gaming.

3D Gaming Guru GX

From all of the tests, this is the most disappointing one – only 143 minutes (2 hours and 23 minutes).

Video playback

For this test we played a 720p video.

Video playback Guru GX

A satisfying result – 414 minutes (6 hours and 54 minutes).

Battery Comparison

In this test the screen doesn’t affect the battery life, since the proximity sensor turns it off during phone calls.

Smartphones Results (min.) Result
difference
Price
GSmart Guru GX 2300 mAh, 5-inch, IPS, Qualcomm Snapdragon 615 (MSM8939) 565 0 % Check price
Motorola Moto G (G2, 2014) 2070 mAh, 5-inch, IPS, Qualcomm Snapdragon 400 (MSM8226) 707 25.13 % Check price
Lenovo P70 4000 mAh, 5-inch, IPS, MediaTek MT6752 1950 245.13 % Check price
MEIZU m1 note 3140 mAh, 5.5-inch, IPS, IGZO, MediaTek MT6752 893 58.05 % Check price
Lenovo Vibe Shot 2900 mAh, 5-inch, IPS, Qualcomm Snapdragon 615 (MSM8939) 1053 86.37 % Check price

We run our Web surfing test with a custom-made script, which browses through 70 popular web pages.

Smartphones Results (min.) Result
difference
Price
GSmart Guru GX 2300 mAh, 5-inch, IPS, Qualcomm Snapdragon 615 (MSM8939) 447 0 % Check price
Motorola Moto G (G2, 2014) 2070 mAh, 5-inch, IPS, Qualcomm Snapdragon 400 (MSM8226) 479 7.16 % Check price
Lenovo P70 4000 mAh, 5-inch, IPS, MediaTek MT6752 681 52.35 % Check price
MEIZU m1 note 3140 mAh, 5.5-inch, IPS, IGZO, MediaTek MT6752 630 40.94 % Check price
Lenovo Vibe Shot 2900 mAh, 5-inch, IPS, Qualcomm Snapdragon 615 (MSM8939) 627 40.27 % Check price

This test uses the same custom-made script, but we use 3G connection instead of Wi-Fi.

Smartphones Results (min.) Result
difference
Price
GSmart Guru GX 2300 mAh, 5-inch, IPS, Qualcomm Snapdragon 615 (MSM8939) 281 0 % Check price
Motorola Moto G (G2, 2014) 2070 mAh, 5-inch, IPS, Qualcomm Snapdragon 400 (MSM8226) 332 18.15 % Check price
Lenovo P70 4000 mAh, 5-inch, IPS, MediaTek MT6752 609 116.73 % Check price
MEIZU m1 note 3140 mAh, 5.5-inch, IPS, IGZO, MediaTek MT6752 556 97.86 % Check price
Lenovo Vibe Shot 2900 mAh, 5-inch, IPS, Qualcomm Snapdragon 615 (MSM8939) 434 54.45 % Check price

For this test we use a looping 720p movie.

Smartphones Results (min.) Result
difference
Price
GSmart Guru GX 2300 mAh, 5-inch, IPS, Qualcomm Snapdragon 615 (MSM8939) 414 0 % Check price
Motorola Moto G (G2, 2014) 2070 mAh, 5-inch, IPS, Qualcomm Snapdragon 400 (MSM8226) 417 0.72 % Check price
Lenovo P70 4000 mAh, 5-inch, IPS, MediaTek MT6752 718 73.43 % Check price
MEIZU m1 note 3140 mAh, 5.5-inch, IPS, IGZO, MediaTek MT6752 631 52.42 % Check price
Lenovo Vibe Shot 2900 mAh, 5-inch, IPS, Qualcomm Snapdragon 615 (MSM8939) 647 56.28 % Check price

In order to simulate 3D gaming, we use Epic Citadel cycles at High Quality setting.

Smartphones Results (min.) Result
difference
Price
GSmart Guru GX 2300 mAh, 5-inch, IPS, Qualcomm Snapdragon 615 (MSM8939) 143 0 % Check price
Motorola Moto G (G2, 2014) 2070 mAh, 5-inch, IPS, Qualcomm Snapdragon 400 (MSM8226) 235 64.34 % Check price
Lenovo P70 4000 mAh, 5-inch, IPS, MediaTek MT6752 357 149.65 % Check price
MEIZU m1 note 3140 mAh, 5.5-inch, IPS, IGZO, MediaTek MT6752 300 109.79 % Check price
Lenovo Vibe Shot 2900 mAh, 5-inch, IPS, Qualcomm Snapdragon 615 (MSM8939) 214 49.65 % Check price

Specs sheet

Guru GX OnScreen
OS Android 4.4 (KitKat)
CPU Qualcomm Snapdragon 615 MSM8939 (4 cores, 1.00GHz, Cortex-A53 & 4 cores, 1.70GHz, Cortex-A57)
RAM 2GB RAM
Memory 32GB
GPU Adreno 405
Display 5-inch IPS LCD capacitive multi-touch display with Corning Gorilla Glass 3 and resolution of 1920 x 1080 pixels
Connectivity Bluetooth v4.0, LE, Wi-Fi 802.11 b/g/n, GPS, A-GPS
Cameras 13MP with autofocus and LED flash as main and 5MP as secondary
Features
  • 2 x mini SIM
  • microSD up to 32GB
  • microUSB 2.0
  • integrated loudspeakers
  • 3.5 mm audio jackк
  • FM radio
  • Accelerometer
  • Proximity sensor
  • Compass
Battery 2300 mAh
Dimensions (W/H/D) 69 x 139 x 7 mm
Weight 115 g (4.05 oz)

Software

KitKatGuruGX GSmart Guru GX runs Android v4.4 KitKat. The user interface isn’t heavily skinned and doesn’t slow down the phone. Thanks to the optimizations of the OS, the device runs smoothly and response time is very low. We were pleasantly surprised that there wasn’t any lag or hick-ups while we used and tested the phone. Android has advanced a lot and is catching up to the fluidity of iOS.

The operating system and preinstalled apps take about 6GB of the device’s storage, leaving you with 26.43GB available.

Lock and Home screens

Lets start with the Lock screen. You can choose between 5 ways to unlock your phone: None, Slide, Face Unlock, Pattern and PIN. If you choose “None”, you get to your home screen as soon as you click the power ON/OFF button on the side, or in other words, no lock screen.

With any of the other options, the Lock screen is available. On it you have 2 panels: The first (main) panel allows you to unlock the device, it shows you the current time and date, and lets you access the notification bar. If you swipe from the right edge of the screen to the left, you get to the second panel, which opens the camera app automatically. You cannot add more panels or widgets to the Lock screen.

Like any other Android device, GSmart Guru GX’s screen is customizable by means of different widgets. It is unfortunate that it isn’t possible to have more or less than 5 panels, even if you don’t use them all. You also can’t change their order or set your own Home screen (it is always the middle one).

Lock screen screenshots

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Apps

Sadly, the poorly skinned software is a bit of a double-edged sword. Yes, the device is fast, but there aren’t any custom-made apps for it. Fortunately, thanks to the Google Play Store, you can get almost any kind of application you need, and it will probably run lag-free, except for the heavy-duty 3D games.

The device comes with some preinstalled apps that cannot be deleted. They can disabled, though, which removes them from your menu.

Screenshots of the user interface

Guru GX UI3
Guru GX Folder
Guru GX UI1
Guru GX UI2

Screenshots of Widgets

Guru GX Widgets1
Guru GX Widgets2
Guru GX Widgets3
Guru GX Widgets4

Notification bar

You get access to a lot of information, apps and settings just from the Notification bar.
At the top it shows the time and date, as well as the available SIM cards. You can also access your Settings menu by tapping the gear symbol in the upper right corner. Right below that is a customizable bar with some quick options and toggles. On the swiped-down Notification bar you can also see how much battery you have left, and also, the estimated remaining time until zero charge. If you are charging your device, you can see the estimated time until the battery is fully charged.

In the middle of the screen you get your notifications, which can be cleared away by swiping left or right. You can quickly clear all notifications by pressing the circular “X” icon in the top right corner.

At the bottom of the Notification bar you have two menus: Notifications and Toggles.
When you press Toggles – new options pop up. From here you can quickly regulate your brightness, you can turn on/off your Wi-Fi, GPS, Bluetooth, 3G, Airplane mode, set silent mode, toggle vibration or ringing, check screen rotation, sync mode, and you get access to a button that captures the screen beneath the notification bar. There is a “Sort” option as well, which allows you to sort the aforementioned toggles just the way you want them.

Notification bar screenshots

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Settings menu

Guru GX Settings
Guru GX Settings2
Guru GX Settings3

The settings menu is laid out pretty simply, you have all your settings grouped in four sub-menus:

Wireless & Networks

From here you can regulate your Wi-Fi connectivity, turn on and off your mobile data, bluetooth and location, and you can also see your data usage. From the “More” menu, you can activate USB tethering, bluetooth tethering and also set up a WLAN hotspot.

Common settings

You have your basic settings like Sound, Display, Storage, Battery and Apps here, and also, the Dual SIM settings and Air gesture operations.

From the Dual SIM settings you can see information about the inserted SIM cards and control which one is used for messaging and cellular data.

You can turn air gestures on and off in the Air gesture operation section. There you can also choose which ones you want active and also, see how to use them by pressing on each one. Currently, there are four types of air gestures available.

The first one, “Air gesture standby”, lets you swipe through the user interface using a fixed gesture (swiping your hand to the left or right above the screen at a distance of 3 to 15 cm).
Second on the list is “Air gesture statusbar”, which lets you open the notification bar by hovering your hand from the top part of the screen to the bottom. This works in reverse as well.
Third is the “Air gesture music”, which allows you to switch songs using the same technique as with the “Air gesture standby”.
The fourth and last option is “Air gesture picture”. It consists out of two parts. First, you can swipe through pictures in the gallery app doing the same gesture as with Air gesture stanbdby and music. Second, you can you zoom in and out by moving your hand to and away from the screen at a distance of 3 to 15 cm.
At the bottom of this section you can see instructions and helpful information on why the gestures may fail from time to time.

Air Gesture screenshots

Guru GX Air GesturesGuru GX Air gesture standbyGuru GX Air gesture statusbarGuru GX air gesture music playerGuru GX Air gesture camera app

Personal

In the “Personal” sub-menu you can add and delete accounts on the device, choose how want your device to be unlocked, change the language on the phone, and reset it to factory settings.

System

In the System menu section you can set up the date and time on the device, choose time zone and date format. You can also change the accessibility settings, add printing devices, and see information about the phone.

File explorer

Guru GX File Explorer

From the file explorer you can search for any file on the device, be it a song, movie, app, image, document etc. From here you can move, copy, delete, share or rename, and you can also see file properties.

There are three ways to search for your desired item.
The first option is to tap the magnifying glass at the upper right corner and just type the name of the file you are looking for. The second option is to open the Internal storage menu and locate it in the device’s folders. Finally, you can search for it in the Category browser, which sorts and groups your files into types.

Other screenshots

Guru GX Phone App
Guru GX Clockapp
Guru GX Clockapp2
Guru GX Opened Apps

Performance

SnapdragonGSmart Guru GX uses one of the first 64-bit capable Qualcomm SoCs – Snapdragon 615. It has eight cores, four of which are power-saving – clocked at 1GHz, and four are high performance – clocked at 1.5 GHz. The SoC has an integrated Adreno 405 GPU with a 2x 32-bit memory controller and 2 gigs of RAM.

The CPU cores are Cortex-A53, successors to the popular Cortex-A7. Not only do they offer the new 64-bit capable ARMv8 ISA, but there are also other improvements such as better branch prediction. This all amounts to to higher performance per clock, even surpassing the older Corex-A9.

Snapdragon 615’s cores are divided into two quad-core clusters, each suited better for a different operating point. One of clusters can be clocked at a maximum of 1.7GHz and is used for more demanding applications, while the other has a limited maximum frequency of 1 GHz for energy-saving purposes. Even though there aren’t many applications that can work efficiently with all eight cores, it is good to know that they could be activated at the same time.

The GPU in the unit (Adreno 405) also has some new features. Thanks to the substantial redesign of the Adreno 400 series chips, they support DirectX 11.2, including hardware tessellation, Open GL ES 3.1 and OpenCL 1.2. Not only that, but the performance is similar to the Adreno 320 and PowerVR G6200.

We can’t compare GSmart Guru GX’s CPU to Qualcomm’s most powerful chips, since it is meant for mid-range phones. On the bright side, we didn’t experience any lag. Everything ran quickly and smoothly.

Below you can see how the device held up in our benchmark tests.

CPU Performance

Geekbench 3.0 is Primate Labs cross-platform processor benchmark which simulates real-world scenarios and gives a combined score, based on the results of integer, floating point and memory performance.

Smartphones Results Result
difference
Price
GSmart Guru GX Qualcomm Snapdragon 615 (MSM8939) (4-core, Cortex-A53, 1.7 GHz), 2GB RAM 2249 0 % Check price
Motorola Moto G (G2, 2014) Qualcomm Snapdragon 400 (MSM8226) (4-core, Cortex-A7, 1.2 GHz), 1GB RAM 1158 – 48.51 % Check price
Lenovo P70 MediaTek MT6752 (8-core, Cortex-A53, 1.7 GHz), 2GB RAM 3551 57.89 % Check price
MEIZU m1 note MediaTek MT6752 (8-core, Cortex-A53, 1.7 GHz), 2GB RAM 3142 39.71 % Check price
Lenovo Vibe Shot Qualcomm Snapdragon 615 (MSM8939) (4-core, Cortex-A53, 1.7 GHz), 3GB RAM 2357 4.8 % Check price

Metal 3 is the latest version of Vellamo’s CPU benchmark.

Smartphones Results Result
difference
Price
GSmart Guru GX Qualcomm Snapdragon 615 (MSM8939) (4-core, Cortex-A53, 1.7 GHz), 2GB RAM 984 0 % Check price
Motorola Moto G (G2, 2014) Qualcomm Snapdragon 400 (MSM8226) (4-core, Cortex-A7, 1.2 GHz), 1GB RAM 627 – 36.28 % Check price
Lenovo P70 MediaTek MT6752 (8-core, Cortex-A53, 1.7 GHz), 2GB RAM 1107 12.5 % Check price
MEIZU m1 note MediaTek MT6752 (8-core, Cortex-A53, 1.7 GHz), 2GB RAM 1041 5.79 % Check price
Lenovo Vibe Shot Qualcomm Snapdragon 615 (MSM8939) (4-core, Cortex-A53, 1.7 GHz), 3GB RAM 1121 13.92 % Check price

Vellamo 2 Metal measures the CPU subsystem performance of mobile processors.

Smartphones Results Result
difference
Price
GSmart Guru GX Qualcomm Snapdragon 615 (MSM8939) (4-core, Cortex-A53, 1.7 GHz), 2GB RAM 813 0 % Check price
Motorola Moto G (G2, 2014) Qualcomm Snapdragon 400 (MSM8226) (4-core, Cortex-A7, 1.2 GHz), 1GB RAM 514 – 36.78 % Check price
Lenovo P70 MediaTek MT6752 (8-core, Cortex-A53, 1.7 GHz), 2GB RAM 898 10.46 % Check price
MEIZU m1 note MediaTek MT6752 (8-core, Cortex-A53, 1.7 GHz), 2GB RAM 862 6.03 % Check price
Lenovo Vibe Shot Qualcomm Snapdragon 615 (MSM8939) (4-core, Cortex-A53, 1.7 GHz), 3GB RAM 853 4.92 % Check price

GPU Performance

The T-Rex 2.7 test is based on ES 2.0/GL 3.0 and includes highly detailed textures, materials, complex geometry, particles with animated textures and a post-process motion blur effect. The graphics pipeline also features planar reflections, specular highlights and soft-shadows.

Smartphones Results Result
difference
Price
GSmart Guru GX Qualcomm Snapdragon 615 (MSM8939); GPU: Adreno 405, 0.55 GHz ; 2GB RAM 15 0 % Check price
Motorola Moto G (G2, 2014) Qualcomm Snapdragon 400 (MSM8226); GPU: Adreno 305, 0.45 GHz ; 1GB RAM 5.8 – 61.33 % Check price
Lenovo P70 MediaTek MT6752; GPU: Mali-T760, 0.7 GHz ; 2GB RAM 16 6.67 % Check price
MEIZU m1 note MediaTek MT6752; GPU: Mali-T760, 0.7 GHz ; 2GB RAM 16 6.67 % Check price
Lenovo Vibe Shot Qualcomm Snapdragon 615 (MSM8939); GPU: Adreno 405, 0.55 GHz ; 3GB RAM 15 0 % Check price

The Manhattan 3.0 test is based on ES 3.0 / GL 4.1 and uses deferred rendering and multi-render target (MRT) for the geometry pass, diffuse and specular lightning. It also features complex effects such as depth shadow map, cloaking effect, post-process effects (bloom, depth of field), occlusion query and animated volumetric light shafts.

Smartphones Results Result
difference
Price
GSmart Guru GX Qualcomm Snapdragon 615 (MSM8939); GPU: Adreno 405, 0.55 GHz ; 2GB RAM 5.6 0 % Check price
Motorola Moto G (G2, 2014) Qualcomm Snapdragon 400 (MSM8226); GPU: Adreno 305, 0.45 GHz ; 1GB RAM 0 % Check price
Lenovo P70 MediaTek MT6752; GPU: Mali-T760, 0.7 GHz ; 2GB RAM 5.8 3.57 % Check price
MEIZU m1 note MediaTek MT6752; GPU: Mali-T760, 0.7 GHz ; 2GB RAM 5.8 3.57 % Check price
Lenovo Vibe Shot Qualcomm Snapdragon 615 (MSM8939); GPU: Adreno 405, 0.55 GHz ; 3GB RAM 5.9 5.36 % Check price

In this test, 3DMark’s Unlimited engine uses a fixed frame interval and renders exactly the same frames in every run on every device. The frames are rendered in 720p “offscreen” while the display is updated with small frame thumbnails every 100 frames to indicate progress.

Smartphones Results Result
difference
Price
GSmart Guru GX Qualcomm Snapdragon 615 (MSM8939); GPU: Adreno 405, 0.55 GHz ; 2GB RAM 7405 0 % Check price
Motorola Moto G (G2, 2014) Qualcomm Snapdragon 400 (MSM8226); GPU: Adreno 305, 0.45 GHz ; 1GB RAM 4659 – 37.08 % Check price
Lenovo P70 MediaTek MT6752; GPU: Mali-T760, 0.7 GHz ; 2GB RAM 10859 46.64 % Check price
MEIZU m1 note MediaTek MT6752; GPU: Mali-T760, 0.7 GHz ; 2GB RAM 10633 43.59 % Check price
Lenovo Vibe Shot Qualcomm Snapdragon 615 (MSM8939); GPU: Adreno 405, 0.55 GHz ; 3GB RAM 7747 4.62 % Check price

Camera

One of the decisive factors when looking for a new device nowadays is the camera. Gsmart Guru GX has a 13-megapixel unit with autofocus and an LED flash at the back. We ran some tests to see how it performs and you can view the results below.

Resolution

The resolution of the camera is measured in LPH (Lines per Picture Height), which is affected by both the lens and the sensor. We conduct our tests using the ISO 12233 test chart.

ISO

The camera of Gsmart Guru GX reached a maximum resolution of 2230 lph in the center of the field, which we rank as good.

On the test composition we get a subjective, yet sufficient idea about the resolution, picture sharpness, color noise, and chromatic aberrations.

Test-GSmart Guru GX

The text is readable and the amount of JPG compression artefacts is acceptable.

TEXT-GSmart Guru GX

Aberrations and color noise

There aren’t any prominent chromatic aberrations.

Aber-GSmart Guru GX

The shaded areas are well-developed with low for color noise for this device class.

Noise-GSmart Guru GX

Color reproduction

ColourChartGuruGX

Blue satisfactory
Green very good
Red satisfactory
Yellow good
Magenta good
Cyan satisfactory
White good
Gray satisfactory

We give it 4.8 out of 10.

You can see the color differences on the digital color map below.

CameraColor-GSmart Guru GX

Additional features

Exp-GSmart Guru GX

The camera can determine exposure to a selected point of the frame. The value variation range is small.

Additionally you can focus on any chosen object. There are some difficulties, however, because many images get blurred and unfocused. The automatic white balance adjustment isn’t that good, it is almosat as if you were choosing balance presets at random. Keep in mind that the unit we used in our tests is a sample, and the problem could be fixed in the final product.

6-1

Camera menus

Menu-GSmart Guru GX

Camera verdict

The camera of GSmart Guru GX has high detail, relatively accurate (albeit slightly oversaturated) colors, and it doesn’t lack manual settings. We hope that in the next software update the problems with the camera focus and automatic white balance will be fixed. At this time, they are serious flaws.

Sample photos

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IMG_060515_102750
IMG_060515_102815
IMG_060515_110209

Sample video

If you want to view the video in the highest quality available – click on the gearbox and choose 1080p HD.

Camera Comparison

We measure the camera’s resolution in LPH (Lines per Picture Height), which is affected by both the lens and the sensor.

Smartphones Results (LPH) Result
difference
Price
GSmart Guru GX Sony IMX240 Exmor RS, 13 MP, 2230 (LPH), f/2.65 2230 0 % Check price
Motorola Moto G (G2, 2014) 8 MP, 1970 (LPH), f/2.0 1970 – 11.66 % Check price
Lenovo P70 OmniVision OV13850, 13 MP, 2020 (LPH), f/2.0 2020 – 9.42 % Check price
MEIZU m1 note Samsung, 13 MP, 2360 (LPH), f/2.2 2360 5.83 % Check price
Lenovo Vibe Shot 16 MP, 2380 (LPH), 2380 6.73 % Check price

We have our own rating system for color accuracy reproduced by a device’s cameras. It’s a result of our algorithm, based on more than 20 of the main colors, and the ones which are most common in nature and everyday life (grass, human skin, sky, etc.).

Smartphones Results / 10 Result
difference
Price
GSmart Guru GX Sony IMX240 Exmor RS, 13 MP, 2230 (LPH), f/2.65 4.8 0 % Check price
Motorola Moto G (G2, 2014) 8 MP, 1970 (LPH), f/2.0 8.9 85.42 % Check price
Lenovo P70 OmniVision OV13850, 13 MP, 2020 (LPH), f/2.0 5.7 18.75 % Check price
MEIZU m1 note Samsung, 13 MP, 2360 (LPH), f/2.2 6.6 37.5 % Check price
Lenovo Vibe Shot 16 MP, 2380 (LPH), 7.8 62.5 % Check price

Conclusion

Looks like GSmart have successfully joined the race for best mid-range smartphone, and it wouldn’t come as a surprise if they manage to conquer their competitors. We can expect them to join the high-end flagship battle very soon.

The overall design of GSmart Guru GX is good, it is thin and light, and it feels great in the hand. The display is colorful and sharp, with large viewing angles. It performed great in our PWM test, showing no harmful light emissions at all brightness levels. Using the device in direct sunlight proved to be a difficulty.

The device runs smoothly, swiping through the user interface is fast and responsive, and we didn’t experience any lag. The heaviest 3D games may come as a challenge, but all other apps are handled well. The camera sensor does a good job, but it does have some flaws like the automatic white balance and touch to focus, but we hope that they will be fixed with the next update. Battery life isn’t that good and is perhaps the worst feature of the device.

Pros

  • Thin and light design
  • Colorful FHD IPS screen
  • No PWM
  • Relatively high performance

Cons

  • Low battery life
  • ISO and touch to focus need to be fixed
  • Hard to see images in direct sunlight

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