OPPO A31 vs Samsung Galaxy A21s

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$311 VIEW ON AMAZON
VIEW ON AMAZON

Display

Size

4.5 inches
6.5 inches

Resolution

854 x 480 pixels,
218 PPI
1600 x 720 pixels, 20:9 ratio,
270 PPI

Technology

IPS LCD
TFT

Screen-to-body

64.59 %
82.94 %

Features

Ambient light sensor, Proximity sensor
Proximity sensor

Hardware

System chip

Qualcomm Snapdragon 410 8916
Samsung Exynos 850

Processor

Quad-core, ARM Cortex-A53, 64-bit
Octa-core, 2000 MHz, Arm Cortex-A55, 64-bit

GPU

Adreno 306
Mali-G76

RAM

1GB
3GB LPDDR4

Internal storage

8GB
32GB (eMMC 5.1), available to use: 19.5 GB

Storage expansion

microSDXC up to 128 GB
microSDXC up to 512 GB

OS

Android
Android (10), Samsung One UI

Battery

Capacity

2000 mAh
5000 mAh

Type

Li - Ion, User replaceable
Li - Polymer, Not user replaceable

Charging

 
Fast charging

Camera

Rear

Single camera
Quad camera

Main camera

8 MP (Autofocus)
48 MP (PDAF)

Specifications

Aperture size: F2.2
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera

 
8 MP (Ultra-wide)

Specifications

 
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera

 
2 MP (Macro)

Specifications

 
Aperture size: F2.4

Fourth camera

 
2 MP (Depth information)

Specifications

 
Aperture size: F2.4

Video recording

1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)

Features

Video calling
 

Front

5 MP
13 MP

Design

Dimensions

5.19 x 2.58 x 0.32 inches (131.9 x 65.54 x 8.03 mm)
6.44 x 2.96 x 0.35 inches (163.7 x 75.3 x 8.9 mm)

Weight

4.76 oz (135.0 g)
the average is 6.2 oz (178 g)
6.77 oz (192.0 g)
the average is 6.2 oz (178 g)

Biometrics

 
2D Face unlock, Fingerprint (touch)

Features

Touch sensitive control keys
 

Colors

Blue, White
Black, White, Blue, Red

Cellular

LTE (FDD)

 
Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)

LTE (TDD)

Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)

UMTS

1900, 2100 MHz
850, 900, 1900, 2100 MHz

Data Speed

 
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

Yes
Yes

SIM type

Nano SIM, Micro SIM
Nano SIM

Multimedia

Headphones

3.5mm jack
3.5mm jack

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features

Album art cover, Background playback
 

Screen mirroring

 
Wireless screen share

Connectivity & Features

Bluetooth

4.0
5.0

Wi-Fi

Yes
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

USB

microUSB, USB 2.0
Type-C (reversible), USB 2.0

Features

Mass storage device, Charging
Charging

Location

GPS, A-GPS
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning

Sensors

Accelerometer
Accelerometer, Gyroscope

Other

Tethering, Computer sync, OTA sync
NFC

Phone features

Notifications

Haptic feedback, Music ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, Speakerphone
 

Other features

Voice dialing, Voice commands, Voice recording
 
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