Comparison between:
- Oukitel K15 Plus
- Oukitel K7 Power
- Oukitel C21 Pro

Brand and model

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

Oukitel K15 PlusOukitel K7 PowerOukitel C21 Pro
Oukitel K15 PlusOukitel K7 Power
Prices
Oukitel C21 Pro
Prices
Model alias-K7Power-

Design

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

Width77.9 mm
7.79 cm
0.256 ft
3.067 in
78 mm
7.8 cm
0.256 ft
3.071 in
75 mm
7.5 cm
0.246 ft
2.953 in
Height170.2 mm
17.02 cm
0.558 ft
6.701 in
168 mm
16.8 cm
0.551 ft
6.614 in
162 mm
16.2 cm
0.531 ft
6.378 in
Thickness15.95 mm
1.595 cm
0.052 ft
0.628 in
14.5 mm
1.45 cm
0.048 ft
0.571 in
9 mm
0.9 cm
0.03 ft
0.354 in
Weight320 g
0.71 lbs
11.29 oz
302 g
0.67 lbs
10.67 oz
192 g
0.42 lbs
6.77 oz
Volume211.47 cm³
12.84 in³
190.01 cm³
11.54 in³
109.35 cm³
6.64 in³
ColorsBlackBlack
Gold
Mint Green
Space Black
Galactic Purple
Body materialsLeather
Kevlar pattern
Metal
Plastic
Leather
Magnesium alloy
Plastic

SIM card

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

SIM card typeNano-SIM
Nano-SIM / microSD
Nano-SIM
Nano-SIM / microSD
Nano-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 (B5)
GSM 900 MHz (B8)
GSM 1800 MHz (B3)
GSM 1900 MHz (B2)
GSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
GSM 850 MHz (B5)
GSM 900 MHz (B8)
GSM 1800 MHz (B3)
GSM 1900 MHz (B2)
W-CDMAW-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)
W-CDMA 1700 MHz (B4)
W-CDMA 1900 MHz (B2)
W-CDMA 2100 MHz (B1)
W-CDMA 900 MHz
W-CDMA 2100 MHz
W-CDMA 900 MHz (B8)
W-CDMA 2100 MHz (B1)
LTELTE-FDD 700 MHz (B12)
LTE-FDD 700 MHz (B17)
LTE-FDD 700 MHz (B28)
LTE-FDD 800 MHz (B20)
LTE-FDD 850 MHz (B5)
LTE-FDD 850 MHz (B19)
LTE-FDD 900 MHz (B8)
LTE-FDD 1700 MHz (B4)
LTE-FDD 1800 MHz (B3)
LTE-FDD 1900 MHz (B2)
LTE-FDD 2100 MHz (B1)
LTE-FDD 2600 MHz (B7)
LTE 800 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-FDD 800 MHz (B20)
LTE-FDD 850 MHz (B19)
LTE-FDD 900 MHz (B8)
LTE-FDD 1800 MHz (B3)
LTE-FDD 2100 MHz (B1)
LTE-FDD 2600 MHz (B7)

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 6
UMTS
EDGE
GPRS
HSPA+
LTE Cat 6
UMTS
EDGE
GPRS
HSPA+
LTE

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 10Android 8.1 OreoAndroid 101

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 Helio A20 (MT6761D)MediaTek MT6750TMediaTek Helio P22 (MT6762D)
Process technology12 nm28 nm12 nm
CPU4x 1.8 GHz ARM Cortex-A534x 1.5 GHz ARM Cortex-A53, 4x 1.0 GHz ARM Cortex-A534x 1.8 GHz ARM Cortex-A53, 4x 1.5 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 KB-
Level 2 cache memory (L2)512 KB
0.5 MB
512 KB
0.5 MB
-
CPU cores488
CPU frequency1800 MHz1500 MHz1800 MHz
GPUIMG PowerVR GE8300ARM Mali-T860 MP2IMG PowerVR GE8320
GPU cores-2-
GPU frequency550 MHz650 MHz600 MHz
RAM capacity3 GB2 GB4 GB
RAM typeLPDDR3LPDDR3LPDDR4X
RAM channelsSingle channelSingle channelDouble channel
RAM frequency800 MHz933 MHz1600 MHz

Storage

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

Storage32 GB16 GB64 GB

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 size6.52 in
165.61 mm
16.56 cm
6 in
152.4 mm
15.24 cm
6.39 in
162.31 mm
16.23 cm
Width2.68 in
67.96 mm
6.8 cm
2.68 in
68.16 mm
6.82 cm
2.68 in
68.02 mm
6.8 cm
Height5.95 in
151.02 mm
15.1 cm
5.37 in
136.31 mm
13.63 cm
5.8 in
147.37 mm
14.74 cm
Aspect ratio2.222:12:1
2:1 (18:9)
2.167:1
Resolution720 x 1600 pixels720 x 1440 pixels720 x 1560 pixels
Pixel density269 ppi
105 ppcm
268 ppi
105 ppcm
269 ppi
105 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area77.66 %71.13 %82.76 %
Other featuresCapacitive
Multi-touch
Capacitive
Multi-touch
Capacitive
Multi-touch
Scratch resistant
2.5D curved glass screen85% NTSC2.5D curved glass screen
In-cell
400 cd/m2
1000:1

Sensors

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

SensorsProximity
Light
Accelerometer
Gyroscope
Fingerprint
Proximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Proximity
Light
Accelerometer
Fingerprint
--Side-mounted fingerprint sensor

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-Sony IMX214 Exmor RSSony IMX362 Exmor RS
Sensor typeCMOSCMOSCMOS
Sensor size-4.69 x 3.52 mm
0.23 in
-
Sensor format--1/2.55"
Pixel size-1.127 µm
0.001127 mm
-
Crop factor-7.38-
ISO-100 - 1600-
Aperture-f/1.8f/2.2
Focal length and 35 mm equivalent-3.5 mm
25.82 mm *(35 mm / full frame)
-
Field of view--90 °
Flash typeLEDDual LEDLED
Image resolution4160 x 3120 pixels
12.98 MP
4160 x 3120 pixels
12.98 MP
4032 x 3024 pixels
12.19 MP
Video resolution1920 x 1080 pixels
2.07 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
Phase detection autofocus (PDAF)
Autofocus
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
Phase detection autofocus (PDAF)
Secondary rear camera - 2 MP
Third rear camera - 0.3 MP
Secondary rear camera - 2 MPSecondary rear camera - 2 MP (macro)
Sensor model - GalaxyCore GC02M2 (#2)
Sensor size - 1/5" (#2)
Pixel size - 1.75 μm (#2)
Aperture size - f/2.2 (#2)
Angle of view - 76° (#2)
Third rear camera - 0.3 MP (depth-sensing)

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 GC5025OmniVision OV8858
Sensor typeCMOS BSICMOS-
Sensor size-2.92 x 2.2 mm
0.14 in
-
Sensor format--1/4"
Pixel size-1.141 µm
0.001141 mm
1.12 µm
0.001120 mm
Crop factor-11.84-
Aperture-f/2.8f/2.2
Focal length and 35 mm equivalent-3.5 mm
41.45 mm *(35 mm / full frame)
-
Field of view-130 °81 °
Image resolution2560 x 1920 pixels
4.92 MP
2560 x 1920 pixels
4.92 MP
3264 x 2448 pixels
7.99 MP
Video resolution1920 x 1080 pixels
2.07 MP
1280 x 720 pixels
0.92 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps30 fps
FeaturesFace unlock-Face unlock

Audio

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

SpeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece
Headphone 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
GLONASS
Galileo
GPS
A-GPS
GLONASS
GPS
A-GPS
GLONASS
BeiDou
Galileo

Wi-Fi

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

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

Bluetooth

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

Version5.04.04.2
FeaturesA2DPA2DPA2DP

USB

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

Connector typeUSB Type-CMicro USBUSB Type-C
Version2.02.02.0
FeaturesCharging
Mass storage
On-The-Go
Charging
Mass storage
On-The-Go
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 jackYesYesNo

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer sync
OTA sync
Tethering
NFC
Computer sync
OTA sync
Tethering
VoLTE
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
AAC+
AMR
AMR-WB
eAAC+
FLAC
M4A
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
M4A
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
MP4
Xvid
3GPP
AVI
DivX
Flash Video
H.263
H.264
MKV
QuickTime
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.

Capacity10000 mAh10000 mAh4000 mAh
TypeLi-PolymerLi-PolymerLi-Polymer
2G talk time-56 h
3360 min
2.3 days
-
2G stand-by time-1200 h
72000 min
50 days
-
3G talk time-56 h
3360 min
2.3 days
-
3G stand-by time-1200 h
72000 min
50 days
-
4G talk time68 h
4080 min
2.8 days
-10 h
600 min
0.4 days
4G stand-by time774 h
46440 min
32.3 days
-360 h
21600 min
15 days
Charger output power9 V / 2 A5 V / 2 A
7 V / 2 A
9 V / 2 A
5 V / 2 A
FeaturesFast charging
Non-removable
Fast charging
Non-removable
Fast charging
Non-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)--0.75 W/kg
Body SAR (EU)--1.155 W/kg
 Oukitel K15 PlusOukitel K7 PowerOukitel C21 Pro