Comparison between:
- Oppo A1k
- Realme C2
- Realme C3

Brand and model

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

Oppo A1kRealme C2Realme C3
Oppo A1k
Prices
Realme C2
Prices
Realme C3
Prices
Model aliasCPH1923-C3i

Design

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

Width73.8 mm
7.38 cm
0.242 ft
2.906 in
73.7 mm
7.37 cm
0.242 ft
2.902 in
75 mm
7.5 cm
0.246 ft
2.953 in
Height154.5 mm
15.45 cm
0.507 ft
6.083 in
154.3 mm
15.43 cm
0.506 ft
6.075 in
164.4 mm
16.44 cm
0.539 ft
6.472 in
Thickness8.4 mm
0.84 cm
0.028 ft
0.331 in
8.5 mm
0.85 cm
0.028 ft
0.335 in
8.95 mm
0.895 cm
0.029 ft
0.352 in
Weight170 g
0.37 lbs
6 oz
166 g
0.37 lbs
5.86 oz
195 g
0.43 lbs
6.88 oz
Volume95.78 cm³
5.82 in³
96.66 cm³
5.87 in³
110.35 cm³
6.7 in³
ColorsBlack
Red
Black
Blue
Blazing Red
Frozen Blue
Body materialsPolycarbonatePlasticPlastic

SIM card

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

SIM card typeNano-SIMNano-SIMNano-SIM
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)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 (B5)
GSM 900 MHz (B8)
GSM 1800 MHz (B3)
GSM 1900 MHz (B2)
W-CDMA--W-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)
W-CDMA 2100 MHz (B1)
UMTSUMTS 850 MHz
UMTS 900 MHz
UMTS 2100 MHz
UMTS 850 MHz
UMTS 900 MHz
UMTS 2100 MHz
-
LTELTE 800 MHz
LTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE 700 MHz (B28)
LTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE-FDD 850 MHz (B5)
LTE-FDD 900 MHz (B8)
LTE-FDD 1800 MHz (B3)
LTE-FDD 2100 MHz (B1)
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+
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)ColorOS 6.0 (Android 9.0 Pie)ColorOS 6.0 (Android 9.0 Pie)Android 10
User interface (UI)--realme UI 1.0

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 P22 (MT6762)MediaTek Helio P22 (MT6762)MediaTek Helio G70
Process technology12 nm12 nm12 nm
CPU4x 2.0 GHz ARM Cortex-A53, 4x 1.5 GHz ARM Cortex-A534x 2.0 GHz ARM Cortex-A53, 4x 1.5 GHz ARM Cortex-A532x 2.0 GHz Cortex-A75, 6x 1.7 GHz Cortex-A55
CPU bits64 bit64 bit64 bit
Instruction setARMv8-AARMv8-AARMv8-A
CPU cores888
CPU frequency2000 MHz2000 MHz2000 MHz
GPUPowerVR GE8320PowerVR GE8320ARM Mali-G52 2EEMC2
GPU frequency650 MHz650 MHz820 MHz
RAM capacity2 GB2 GB
3 GB
3 GB
4 GB
RAM typeLPDDR3LPDDR3LPDDR3
RAM channelsSingle channelSingle channelSingle channel
RAM frequency933 MHz933 MHz933 MHz

Storage

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

Storage32 GB16 GB
32 GB
32 GB
64 GB
--eMMC 5.1

Memory cards

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

TypesmicroSD
microSDHC
microSDXC
microSD
microSDHC
microSDXC
miniSD
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 size6.1 in
154.94 mm
15.49 cm
6.1 in
154.94 mm
15.49 cm
6.52 in
165.61 mm
16.56 cm
Width2.56 in
64.93 mm
6.49 cm
2.61 in
66.33 mm
6.63 cm
2.68 in
67.96 mm
6.8 cm
Height5.54 in
140.68 mm
14.07 cm
5.51 in
140.03 mm
14 cm
5.95 in
151.02 mm
15.1 cm
Aspect ratio2.167:12.111:12.222:1
Resolution720 x 1560 pixels720 x 1520 pixels720 x 1600 pixels
Pixel density282 ppi
110 ppcm
276 ppi
108 ppcm
269 ppi
105 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area80.37 %81.93 %83.51 %
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Corning Gorilla Glass 3
2.5D curved glass screen
Corning Gorilla Glass 3
2.5D curved glass screen
LTPS (Low Temperature PolySilicon)
Corning Gorilla Glass
2.5D curved glass screen
480 cd/m²

Sensors

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

SensorsProximity
Light
Accelerometer
Compass
Proximity
Light
Accelerometer
Compass
Proximity
Light
Accelerometer
Compass

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 typeCMOSCMOSCMOS
Sensor format1/3.2"--
Pixel size1.4 µm
0.001400 mm
-1.25 µm
0.001250 mm
ISO100 - 1600--
Aperturef/2.2f/2.2f/1.8
Focal length and 35 mm equivalent3.6 mm
27 mm *(35 mm / full frame)
-3.95 mm
Number of lenses-55
Flash typeLEDDual LEDDual LED
Image resolution3264 x 2448 pixels
7.99 MP
4160 x 3120 pixels
12.98 MP
4032 x 3096 pixels
12.48 MP
Video resolution1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
3840 x 2160 pixels
8.29 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
Phase detection autofocus (PDAF)
Autofocus
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
Phase detection autofocus (PDAF)
Chroma Boost
-Secondary rear camera - 2 MP
Aperture size - f/2.4 (#2)
4x digital zoom
Secondary rear camera - 2 MP (depth-sensing)
Aperture size - f/2.4 (#4)

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 type-CMOS-
Sensor format1/5"--
Pixel size1.12 µm
0.001120 mm
1.12 µm
0.001120 mm
1.12 µm
0.001120 mm
Aperturef/2-f/2.4
Focal length and 35 mm equivalent2.64 mm
28 mm *(35 mm / full frame)
--
Number of lenses--5
Image resolution2592 x 1944 pixels
5.04 MP
2560 x 1920 pixels
4.92 MP
2560 x 1920 pixels
4.92 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
FeaturesFace unlockFace unlockFace unlock
HDR

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.

RadioNoYesYes

Tracking/Positioning

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

Tracking/PositioningGPS
A-GPS
GLONASS
BeiDou
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-Fi802.11b
802.11g
802.11n
Wi-Fi Hotspot
Wi-Fi Display
802.11b
802.11g
802.11n
Wi-Fi Hotspot
Wi-Fi Direct
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.

Version4.24.25.0
FeaturesA2DPA2DP
EDR
LE
A2DP
EDR
HID
LE

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
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 jackYesYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer sync
OTA sync
Tethering
VoLTE
ViLTE
Computer sync
OTA sync
Tethering
VoLTE
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
AAC+
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
LDAC

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
MKV
MP4
WebM
WMV
Xvid
3GPP
AVI
H.263
H.264
H.265
MKV
MP4
WebM
WMV
Xvid
3GPP
AVI
DivX
H.263
H.264
H.265
MKV
MP4
VC-1
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 mAh4000 mAh5000 mAh
TypeLi-PolymerLi-PolymerLi-Polymer
3G talk time--43 h 54 min
43.9 h
2634 min
1.8 days
3G stand-by time--727 h 42 min
727.7 h
43662 min
30.3 days
Charger output power5 V / 2 A5 V / 2 A5 V / 2 A
FeaturesNon-removableNon-removableFast charging
Non-removable

Additional features

Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.

Additional featuresCPH1923 - SAR (Specific Absorption Rate) India: head - 1.132 W/kg; body - 0.569 W/kg-Splash resistant
 Oppo A1kRealme C2Realme C3