Comparison between:
- Oukitel K4000
- Oukitel U7 Pro
- Cong Shallots Metal Standard Edition

Brand and model

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

Oukitel K4000Oukitel U7 ProCong Shallots Metal Standard Edition
Oukitel K4000
Prices
Oukitel U7 Pro
Prices
Cong Shallots Metal Standard Edition
Model alias--Qing Cong Metal Standard Edition
C1391

Design

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

Width70.5 mm
7.05 cm
0.231 ft
2.776 in
78.3 mm
7.83 cm
0.257 ft
3.083 in
76 mm
7.6 cm
0.249 ft
2.992 in
Height143.5 mm
14.35 cm
0.471 ft
5.65 in
157.5 mm
15.75 cm
0.517 ft
6.201 in
150 mm
15 cm
0.492 ft
5.906 in
Thickness10.5 mm
1.05 cm
0.034 ft
0.413 in
8.8 mm
0.88 cm
0.029 ft
0.346 in
8.55 mm
0.855 cm
0.028 ft
0.337 in
Weight208 g
0.46 lbs
7.34 oz
206 g
0.45 lbs
7.27 oz
165 g
0.36 lbs
5.82 oz
Volume106.23 cm³
6.45 in³
108.52 cm³
6.59 in³
97.47 cm³
5.92 in³
ColorsWhite
Black
Gray
Gold
White
Silver
Gold
Body materialsMetal
Plastic
PlasticAluminium alloy

SIM card

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

SIM card typeMicro-SIMMicro-SIMNano-SIM
Nano-SIM / microSD
Number of SIM cards222
FeaturesDual SIM stand-by (Both cards are active. When one is busy, the other is not active)Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)-

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 1900 MHz
W-CDMA 2100 MHz
W-CDMA 850 MHz
W-CDMA 2100 MHz
TD-SCDMA--TD-SCDMA 1880-1920 MHz
TD-SCDMA 2010-2025 MHz
LTELTE 800 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 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)

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+
UMTS
EDGE
GPRS
HSPA+
LTE Cat 4
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)Android 5.1 LollipopAndroid 5.1 LollipopCONG OS (Android)

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 MT6735PMediaTek MT6580MediaTek MT6753T
Process technology28 nm28 nm28 nm
CPU4x 1.0 GHz ARM Cortex-A534x 1.3 GHz ARM Cortex-A78x 1.5 GHz ARM Cortex-A53
CPU bits64 bit32 bit64 bit
Instruction setARMv8-AARMv7-AARMv8-A
Level 1 cache memory (L1)32 KB + 32 KB32 KB + 32 KB32 KB + 32 KB
Level 2 cache memory (L2)512 KB
0.5 MB
512 KB
0.5 MB
512 KB
0.5 MB
CPU cores448
CPU frequency1000 MHz1300 MHz1500 MHz
GPUARM Mali-T720 MP2ARM Mali-400 MP1ARM Mali-T720 MP3
GPU cores113
GPU frequency400 MHz500 MHz450 MHz
RAM capacity2 GB1 GB3 GB
RAM typeLPDDR3LPDDR2/LPDDR3LPDDR3
RAM channelsSingle channelSingle channelSingle channel
RAM frequency533 MHz533 MHz666 MHz

Storage

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

Storage16 GB8 GB16 GB
32 GB

Memory cards

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

TypesmicroSD
microSDHC
microSDXC
microSD
microSDHC
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
5.5 in
139.7 mm
13.97 cm
Width2.45 in
62.26 mm
6.23 cm
2.7 in
68.49 mm
6.85 cm
2.7 in
68.49 mm
6.85 cm
Height4.36 in
110.69 mm
11.07 cm
4.79 in
121.76 mm
12.18 cm
4.79 in
121.76 mm
12.18 cm
Aspect ratio1.778:1
16:9
1.778:1
16:9
1.778:1
16:9
Resolution720 x 1280 pixels720 x 1280 pixels1080 x 1920 pixels
Pixel density294 ppi
115 ppcm
267 ppi
104 ppcm
401 ppi
157 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area68.34 %67.84 %73.39 %
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Corning Gorilla Glass
2.5D curved glass screen
2.5D curved glass screen85% NTSC

Sensors

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

SensorsProximity
Light
Accelerometer
Proximity
Light
Accelerometer
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 model-OmniVision OV8858Samsung
Sensor typeCMOSPureCelCMOS BSI
Sensor size-3.68 x 2.77 mm
0.18 in
-
Pixel size-1.127 µm
0.001127 mm
-
Crop factor-9.4-
Aperture--f/2
Focal length and 35 mm equivalent-3.5 mm
32.9 mm *(35 mm / full frame)
-
Number of lenses--5
Flash typeLEDLEDLED
Image resolution3264 x 2448 pixels
7.99 MP
3264 x 2448 pixels
7.99 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
Digital image stabilization
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
Scene 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 MPInterpolated resolution - 13 MP-

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 model-GalaxyCore GC2355-
Sensor type-CMOS-
Sensor size-2.8 x 2.1 mm
0.14 in
-
Pixel size-1.75 µm
0.001750 mm
-
Crop factor-12.36-
Aperturef/2--
Image resolution1600 x 1200 pixels
1.92 MP
1600 x 1200 pixels
1.92 MP
3264 x 2448 pixels
7.99 MP
Video resolution640 x 480 pixels
0.31 MP
640 x 480 pixels
0.31 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps30 fps
Interpolated resolution - 5 MP--

Audio

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

SpeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece

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
GPSGPS
A-GPS

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
802.11b
802.11g
802.11n
Wi-Fi Hotspot
802.11b
802.11g
802.11n
Wi-Fi Hotspot

Bluetooth

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

Version4.04.04.0
FeaturesA2DPA2DPA2DP

USB

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

Connector typeMicro USBMicro USBMicro USB
Version2.02.02.0
FeaturesCharging
Mass storage
Charging
Mass storage
Charging
Mass storage

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 jackYesYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer sync
OTA sync
Tethering
Computer sync
OTA sync
Tethering
HotKnot
Computer sync
OTA sync
Tethering

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
eAAC+
FLAC
M4A
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
AMR-WB
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
MKV
MP4
Xvid
3GPP
AVI
MKV
MP4
Xvid
3GPP
H.263
H.264
MKV
MP4
WebM
WMV
Xvid

Battery

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

Capacity4000 mAh2500 mAh3050 mAh
TypeLi-PolymerLi-PolymerLi-Polymer
2G talk time72 h
4320 min
3 days
12 h
720 min
0.5 days
-
2G stand-by time480 h
28800 min
20 days
100 h
6000 min
4.2 days
220 h
13200 min
9.2 days
3G talk time70 h
4200 min
2.9 days
10 h
600 min
0.4 days
-
3G stand-by time500 h
30000 min
20.8 days
100 h
6000 min
4.2 days
210 h
12600 min
8.8 days
4G stand-by time--200 h
12000 min
8.3 days
Charger output power5 V / 1 A5 V / 1 A-
FeaturesRemovableRemovableNon-removable

Specific Absorption Rate (SAR)

The SAR rating shows the amount of electromagnetic radiation absorbed by the human body when using a mobile device, expressed in W/kg.

Head SAR (EU)0.572 W/kg--
Body SAR (EU)0.402 W/kg--
Head SAR (USA)1.038 W/kg--
Body SAR (USA)0.671 W/kg--
 Oukitel K4000Oukitel U7 ProCong Shallots Metal Standard Edition