Comparison between:
- Gretel A9
- Ulefone Mix
- Gome U7

Brand and model

Information about the brand, model and model alias (if any) of a specific device.

Gretel A9Ulefone MixGome U7
Gretel A9Ulefone MixGome U7
Model alias--2017M27A

Design

Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.

Width72.8 mm
7.28 cm
0.239 ft
2.866 in
75 mm
7.5 cm
0.246 ft
2.953 in
75.2 mm
7.52 cm
0.247 ft
2.961 in
Height146.6 mm
14.66 cm
0.481 ft
5.772 in
143 mm
14.3 cm
0.469 ft
5.63 in
161.5 mm
16.15 cm
0.53 ft
6.358 in
Thickness8.7 mm
0.87 cm
0.029 ft
0.343 in
8.7 mm
0.87 cm
0.029 ft
0.343 in
7.5 mm
0.75 cm
0.025 ft
0.295 in
Weight164 g
0.36 lbs
5.78 oz
173 g
0.38 lbs
6.1 oz
164 g
0.36 lbs
5.78 oz
Volume92.85 cm³
5.64 in³
93.31 cm³
5.67 in³
91.09 cm³
5.53 in³
ColorsBlack
Rose-gold
Black
Blue
Black
Blue
Body materials-Metal
Plastic
Metal

SIM card

The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.

SIM card typeMicro-SIM / microSD
Nano-SIM
Nano-SIM / microSD
Nano-SIM
Nano-SIM
Nano-SIM / microSD
Number of SIM cards222

Networks

A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other.

GSMGSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
GSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
GSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
W-CDMAW-CDMA 900 MHz
W-CDMA 2100 MHz
W-CDMA 900 MHz
W-CDMA 2100 MHz
W-CDMA 900 MHz
W-CDMA 2100 MHz
TD-SCDMA--TD-SCDMA 1880-1920 MHz
TD-SCDMA 2010-2025 MHz
LTELTE 800 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-TDD 2300 MHz (B40)
LTE 800 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-TDD 1900 MHz (B39)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz

Mobile network technologies and bandwidth

Communication between devices within mobile networks is realized via various generations of network technologies, which provide different bandwidth.

Mobile network technologiesUMTS
EDGE
GPRS
HSPA+
LTE Cat 4
UMTS
EDGE
GPRS
HSPA+
LTE Cat 6
UMTS
EDGE
GPRS
LTE Cat 6
TD-SCDMA
TD-HSDPA

Operating system

Operating system is the system software, which manages and controls the functioning of the hardware components of the device.

Operating system (OS)Freeme OS (Android 6.0.1 Marshmallow)
Android 7.0 Nougat
Android 7.0 NougatGome OS 2.0 (Android Nougat 7.1)

System on Chip (SoC)

A system on a chip (SoC) includes into a single chip some of the main hardware components of the mobile device.

SoCMediaTek MT6737MediaTek MT6750TMediaTek Helio P25 (MT6757CD)
Process technology28 nm28 nm16 nm
CPUARM Cortex-A534x 1.5 GHz ARM Cortex-A53, 4x 1.0 GHz ARM Cortex-A534x 2.5 GHz ARM Cortex-A53, 4x 1.6 GHz ARM Cortex-A53
CPU bits64 bit64 bit64 bit
Instruction setARMv8-AARMv8-AARMv8-A
Level 1 cache memory (L1)32 KB + 32 KB32 KB + 32 KB256 KB + 256 KB
Level 2 cache memory (L2)512 KB
0.5 MB
512 KB
0.5 MB
2048 KB
2 MB
CPU cores488
CPU frequency1250 MHz1500 MHz2500 MHz
GPUARM Mali-T720 MP1ARM Mali-T860 MP2ARM Mali-T880 MP2
GPU cores122
GPU frequency600 MHz650 MHz900 MHz
RAM capacity2 GB4 GB4 GB
6 GB
RAM typeLPDDR3LPDDR3LPDDR4X
RAM channelsSingle channelSingle channelDouble channel
RAM frequency640 MHz833 MHz1600 MHz

Storage

Every mobile device has a built-in storage (internal memory) with a fixed capacity.

Storage16 GB64 GB64 GB
eMMC--

Memory cards

Memory cards are used in mobile devices for expanding their external storage capacity.

TypesmicroSD
microSDHC
microSDXC
microSD
microSDHC
microSDXC
microSD
microSDHC
microSDXC

Display

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

Type/technologyIPSIPSIPS
Diagonal size5 in
127 mm
12.7 cm
5.5 in
139.7 mm
13.97 cm
5.99 in
152.15 mm
15.21 cm
Width2.45 in
62.26 mm
6.23 cm
2.7 in
68.49 mm
6.85 cm
2.68 in
68.04 mm
6.8 cm
Height4.36 in
110.69 mm
11.07 cm
4.79 in
121.76 mm
12.18 cm
5.36 in
136.08 mm
13.61 cm
Aspect ratio1.778:1
16:9
1.778:1
16:9
2:1
2:1 (18:9)
Resolution720 x 1280 pixels720 x 1280 pixels1080 x 2160 pixels
Pixel density294 ppi
115 ppcm
267 ppi
104 ppcm
403 ppi
158 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area64.79 %78.01 %76.49 %
Other featuresCapacitive
Multi-touch
Capacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
-Corning Gorilla Glass 3
2.5D curved glass screen
2.5D curved glass screen

Sensors

Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.

SensorsProximity
Light
Accelerometer
Fingerprint
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Proximity
Light
Accelerometer
Compass
Fingerprint

Rear camera

The primary camera of the mobile device is usually placed on its back and can be combined with one or more additional cameras.

Sensor modelSamsung S5K3H7Sony IMX258 Exmor RSSony IMX258 Exmor RS
Sensor typeCMOS BSICMOSCMOS
Sensor size4.54 x 3.42 mm
0.22 in
4.71 x 3.49 mm
0.23 in
4.71 x 3.49 mm
0.23 in
Pixel size1.39 µm
0.001390 mm
1.133 µm
0.001133 mm
1.133 µm
0.001133 mm
Crop factor7.627.377.37
ISO-100 - 1600-
Aperturef/1.8f/2.2-
Focal length and 35 mm equivalent3.5 mm
26.67 mm *(35 mm / full frame)
3.5 mm
25.81 mm *(35 mm / full frame)
-
Number of lenses-6-
Flash typeLEDDual LEDLED
Image resolution3264 x 2448 pixels
7.99 MP
4160 x 3120 pixels
12.98 MP
4160 x 3120 pixels
12.98 MP
Video resolution1280 x 720 pixels
0.92 MP
1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps30 fps
FeaturesAutofocus
Continuous shooting
Digital zoom
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Autofocus
Continuous shooting
Digital zoom
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Macro mode
Autofocus
Continuous shooting
Digital zoom
Digital image stabilization
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Phase detection autofocus (PDAF)
Interpolated resolution - 13 MPSecondary rear camera - 5 MP (interpolated from 0.3 MP)
Sensor model - GalaxyCore GC0310 (#2)
Pixel size - 2.25 μm (#2)
-

Front camera

Modern smartphones have one or more front cameras and their positioning has led to various design concepts – pop-up camera, rotating camera, notch, punch hole, under-display camera, etc.

Sensor modelGalaxyCore GC2155Sony IMX219PQ Exmor R-
Sensor type-CMOS BSI-
Sensor size2.8 x 2.1 mm
0.14 in
3.67 x 2.76 mm
0.18 in
-
Pixel size1.75 µm
0.001750 mm
1.124 µm
0.001124 mm
-
Crop factor12.369.42-
Aperturef/2.8f/2.2-
Focal length and 35 mm equivalent3.5 mm
43.27 mm *(35 mm / full frame)
3.5 mm
32.98 mm *(35 mm / full frame)
-
Auxiliary lightLED--
Image resolution1600 x 1200 pixels
1.92 MP
3264 x 2448 pixels
7.99 MP
4160 x 3120 pixels
12.98 MP
Video resolution640 x 480 pixels
0.31 MP
-1280 x 720 pixels
0.92 MP
Video FPS30 fps-30 fps
Features--Face unlock
Interpolated resolution - 5 MPInterpolated resolution - 13 MP-

Audio

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

SpeakerLoudspeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
-Awinic AW8737sHeadphone adapter

Radio

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

RadioYesYesYes

Tracking/Positioning

Information about the positioning and navigation technologies supported by the device.

Tracking/PositioningGPS
A-GPS
GPS
A-GPS
GLONASS
GPS
A-GPS
GLONASS

Wi-Fi

Wi-Fi is a technology that provides wireless data connections between various devices within a short range.

Wi-Fi802.11b
802.11g
802.11n
Wi-Fi Hotspot
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
Dual band
Wi-Fi Hotspot
Wi-Fi Direct

Bluetooth

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

Version4.04.14.0
FeaturesA2DPA2DPA2DP

USB

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

Connector typeMicro USBMicro USBUSB Type-C
Version2.02.02.0
FeaturesCharging
Mass storage
On-The-Go
Charging
Mass storage
On-The-Go
Charging
Mass storage
On-The-Go

Headphone jack

The headphone jack is an audio phone connector, a.k.a. an audio jack. The most widely used one in mobile devices is the 3.5 mm headphone jack.

Headphone jackYesYesNo

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer sync
OTA sync
Tethering
Computer sync
OTA sync
Tethering
Computer sync
OTA sync
Tethering
VoLTE

Browser

A web browser is a software application for accessing, fetching, displaying and navigating through information on the World Wide Web.

BrowserHTML
HTML5
CSS 3
HTML
HTML5
CSS 3
HTML
HTML5
CSS 3

Audio file formats/codecs

Mobile devices support various audio file formats and codecs, which respectively store and code/decode digital audio data.

Audio file formats/codecsAAC
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV

Video file formats/codecs

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

Video file formats/codecs3GPP
AVI
DivX
Flash Video
H.263
H.264
MKV
QuickTime
MP4
WebM
WMV
Xvid
3GPP
AVI
DivX
H.263
H.264
QuickTime
MP4
WebM
WMV
Xvid
3GPP
AVI
Flash Video
H.263
H.264
MKV
QuickTime
MP4
Xvid

Battery

The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.

Capacity2300 mAh3300 mAh3050 mAh
TypeLi-IonLi-PolymerLi-Polymer
Charger output power5 V / 1 A5 V / 1.5 A5 V / 2 A
FeaturesNon-removableNon-removableNon-removable
 Gretel A9Ulefone MixGome U7