OPPO A31 vs Samsung Galaxy A51

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$311 VIEW ON AMAZON
$319 VIEW ON AMAZON

Display

Size

4.5 inches
6.5 inches

Resolution

854 x 480 pixels,
218 PPI
2400 x 1080 pixels, 20:9 ratio,
405 PPI

Technology

IPS LCD
Super AMOLED

Screen-to-body

64.59 %
87.37 %

Features

Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip

Qualcomm Snapdragon 410 8916
Samsung Exynos 9611

Processor

Quad-core, ARM Cortex-A53, 64-bit
Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm

GPU

Adreno 306
Mali-G72 MP3

RAM

1GB
4GB LPDDR4

Internal storage

8GB
128GB, available to use: 105.9 GB

Storage expansion

microSDXC up to 128 GB
microSDXC up to 512 GB

OS

Android
Android (10), Samsung One UI

Battery

Capacity

2000 mAh
4000 mAh

Type

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

Battery life test results

 

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

 
12 MP (Ultra-wide)

Specifications

 
Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.12 μm

Third camera

 
5 MP (Macro)

Specifications

 
Aperture size: F2.4; Focal Length: 40 mm

Fourth camera

 
5 MP (Depth information)

Specifications

 
Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm

Video recording

1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)

Features

Video calling
Hyperlapse, EIS

Front

5 MP
32 MP (HDR)

Design

Dimensions

5.19 x 2.58 x 0.32 inches (131.9 x 65.54 x 8.03 mm)
6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)

Weight

4.76 oz (135.0 g)
the average is 6.2 oz (176 g)
6.07 oz (172.0 g)
the average is 6.2 oz (176 g)

Materials

 
Back: Plastic; Frame: Plastic

Biometrics

 
2D Face unlock, In-screen fingerprint

Features

Touch sensitive control keys
 

Colors

Blue, White
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue

Cellular

LTE (FDD)

 
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)

LTE (TDD)

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

UMTS

1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

Data Speed

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

Dual SIM

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
Dolby Atmos

Screen mirroring

 
Wireless screen share

Radio

 
FM

Additional microphone(s)

 
for Noise cancellation

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, OTG

Location

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

Sensors

Accelerometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers)

Other

Tethering, Computer sync, OTA sync
NFC, ANT+

Phone features

Notifications

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

Other features

Voice dialing, Voice commands, Voice recording
 

Regulatory Approval

FCC approval

 
 

Date approved

 
Nov 28, 2019

 
FCC ID value: A3LSMA515FN link

Measured SAR

 
 

Head

 
0.89 W/kg

Body

 
1.18 W/kg

Simultaneous Transmission

 
1.56 W/kg

Wireless Router

 
1.12 W/kg

Phablet

 
2.76 W/kg

Buyers information

Price

 
$ 400
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