Comparison between:
- Oppo A37
- InnJoo Fire4
- Oukitel K5

Brand and model

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

Oppo A37InnJoo Fire4Oukitel K5
Oppo A37
Prices
InnJoo Fire4Oukitel K5
Prices
Model alias-Fire 4-

Design

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

Width71 mm
7.1 cm
0.23 ft
2.8 in
70.6 mm
7.06 cm
0.23 ft
2.78 in
-
Height143.1 mm
14.31 cm
0.47 ft
5.63 in
144 mm
14.4 cm
0.47 ft
5.67 in
-
Thickness7.68 mm
0.77 cm
0.03 ft
0.3 in
7.9 mm
0.79 cm
0.03 ft
0.31 in
-
Weight136 g
0.3 lbs
4.8 oz
175 g
0.39 lbs
6.17 oz
-
Volume78.03 cm³
4.74 in³
80.31 cm³
4.88 in³
-
ColorsGold
Gray
Gray
Gold
Black
Blue
Gold
Body materialsMetalMetalMetal
Glass

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
Nano-SIM / microSD
Micro-SIM
Nano-SIM / microSD
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-CDMA--W-CDMA 900 MHz
W-CDMA 2100 MHz
UMTSUMTS 850 MHz
UMTS 900 MHz
UMTS 2100 MHz
UMTS 900 MHz
UMTS 2100 MHz
-
LTELTE 850 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE-TDD 2300 MHz (B40)
LTE 800 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE 800 MHz
LTE 900 MHz
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 4
UMTS
EDGE
GPRS
HSPA+
LTE Cat 4

Operating system

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

Operating system (OS)ColorOS 3.0 (Android 5.1.1 Lollipop)Android 7.0 NougatAndroid 7.0 Nougat

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.

SoCQualcomm Snapdragon 410 MSM8916MediaTek MT6737MediaTek MT6737T
Process technology28 nm28 nm28 nm
CPUARM Cortex-A53ARM Cortex-A53ARM Cortex-A53
CPU bits64 bit64 bit64 bit
Instruction setARMv8ARMv8-AARMv8-A
Level 0 cache memory (L0)4 KB + 4 KB--
Level 1 cache memory (L1)16 KB + 16 KB32 KB + 32 KB32 KB + 32 KB
Level 2 cache memory (L2)2048 KB
2 MB
512 KB
0.5 MB
512 KB
0.5 MB
CPU cores444
CPU frequency1200 MHz1300 MHz1500 MHz
GPUQualcomm Adreno 306ARM Mali-T720 MP1ARM Mali-T720 MP2
GPU cores-12
GPU frequency400 MHz600 MHz600 MHz
RAM capacity2 GB2 GB2 GB
RAM typeLPDDR3LPDDR3LPDDR3
RAM channelsSingle channelSingle channelSingle channel
RAM frequency533 MHz640 MHz733 MHz

Storage

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

Storage16 GB16 GB16 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 size5 in
127 mm
12.7 cm
5 in
127 mm
12.7 cm
5.7 in
144.78 mm
14.48 cm
Width2.45 in
62.26 mm
6.23 cm
2.45 in
62.26 mm
6.23 cm
2.55 in
64.75 mm
6.47 cm
Height4.36 in
110.69 mm
11.07 cm
4.36 in
110.69 mm
11.07 cm
5.1 in
129.5 mm
12.95 cm
Aspect ratio1.778:1
16:9
1.778:1
16:9
2:1
2:1 (18:9)
Resolution720 x 1280 pixels720 x 1280 pixels720 x 1440 pixels
Pixel density294 ppi
115 ppcm
294 ppi
115 ppcm
282 ppi
110 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area68.05 %68.01 %-
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Capacitive
Multi-touch
Corning Gorilla Glass 4
1000:1 contrast ratio
450 cd/m²
2.5D curved glass screen2.5D curved glass screen

Sensors

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

SensorsProximity
Light
Accelerometer
Compass
Proximity
Light
Accelerometer
Fingerprint
Proximity
Light
Accelerometer
Geomagnetic
Fingerprint

Primary camera

The primary camera of the mobile device is usually placed at its back and is used for taking photos and recording videos.

Sensor typeCMOS BSICMOSCMOS
Sensor size4.54 x 3.42 mm
0.22 in
--
Pixel size1.39 µm
0.00139 mm
--
Crop factor7.62--
Aperturef/2.2f/2-
Flash typeLEDDual LEDDual LED
Image resolution3264 x 2448 pixels
7.99 MP
4160 x 3120 pixels
12.98 MP
4160 x 3120 pixels
12.98 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
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
Digital image stabilization
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
5-element lens5-element lensSecondary rear camera - 2 MP

Secondary camera

Secondary cameras are placed above the screen of the device and are usually used for video calls, gesture recognition, etc.

Sensor size3.2 x 2.4 mm
0.16 in
--
Pixel size1.25 µm
0.00125 mm
--
Crop factor10.82--
Aperturef/2.4f/2.4-
Flash type-LED-
Image resolution2560 x 1920 pixels
4.92 MP
2560 x 1920 pixels
4.92 MP
2560 x 1920 pixels
4.92 MP
Video resolution1280 x 720 pixels
0.92 MP
640 x 480 pixels
0.31 MP
640 x 480 pixels
0.31 MP
Video FPS30 fps30 fps30 fps
4-element lens--

Audio

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

SpeakerLoudspeaker
Earpiece
Stereo speakers
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
GPS
A-GPS
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
Wi-Fi Direct
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
Dual band
Wi-Fi Hotspot
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.

Version4.04.04.2
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
On-The-Go
Charging
Mass storage
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 jackYesYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

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

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
AMR
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
Flash Video
H.263
H.264
MKV
QuickTime
MP4
WebM
Xvid
3GPP
AVI
Flash Video
H.263
H.264
MKV
MP4
WMV
Xvid
3GPP
AVI
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.

Capacity2630 mAh2500 mAh4000 mAh
TypeLi-PolymerLi-PolymerLi-Polymer
2G talk time-9 h
540 min
0.4 days
-
2G stand-by time-288 h
17280 min
12 days
-
3G talk time-9 h
540 min
0.4 days
-
3G stand-by time-288 h
17280 min
12 days
-
Charger output power5 V / 1 A5 V / 1 A9 V / 2 A
FeaturesNon-removableNon-removableFast charging
Non-removable
 Oppo A37InnJoo Fire4Oukitel K5