Phone Comparison - Samsung Galaxy A20 vs Samsung Galaxy A31 vs Oppo A57

general General Info

Manufacturer Samsung Samsung Oppo
Announced March 2019 2020, March 24 April 2022
Status Coming Soon - April 2019 Coming Soon - April 2020 Coming Soon - April 2022
Colors Blue, Black Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White Black, Blue, Lilac
Form Factor Candybar Candybar Candybar
Dimension - 159.3 x 73.1 x 8.6 mm
(6.27 x 2.88 x 0.34 in)
163.8 x 75.1 x 8 mm
(6.45 x 2.96 x 0.31 in)
Weight - 185 g (6.53 oz) 186 g (6.56 oz)
SIM Type Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) Dual SIM (Nano-SIM, dual stand-by)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only) GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA2000 1x
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 800 / 850 / 900 / 1900 / 2100
4G Network LTE LTE (unspecified) 1, 3, 5, 7, 8, 28, 34, 38, 39, 40, 41
5G Network - - 1, 5, 8, 28, 41, 77, 78 SA/NSA
Messaging
Build Features - Fingerprint Sensor
- Fingerprint Sensor (under display, optical)
- Fingerprint Sensor (side-mounted)

hardware Hardware and OS

OS Android 9.0 (Pie) Android 10.0 Android 12
User Interface - One UI 2.0 ColorOS 12.1
Processor Octa-core (2x1.6 GHz & 6x1.35 GHz), Exynos 7884 Octa Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55), Mediatek MT6768 Helio P65 (12nm) Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), MediaTek MT6833P Dimensity 810 5G (6 nm)
GPU - Mali-G52 MC2 Mali-G57 MC2
RAM 3 GB 6 GB 8 GB
Internal Memory 32 GB 128 GB 128 GB
External Memory microSD, up to 512 GB (dedicated slot) microSDXC microSDXC

display Display

Type Super AMOLED Capacitive Touchscreen Super AMOLED Capacitive Touchscreen HD+ IPS LCD Screen
90Hz Refresh Rate
480 nits (typ), 600 nits (HBM)
Colors 16M colors 16M colors 16M colors
Size 6.4 inches 6.4 inches 6.56 inches
Resolution 720 x 1560 pixels (268 ppi) 1080 x 2400 pixels (411 ppi) 720 x 1612 pixels (269 ppi)
Screen-to-Body Ratio - 85.01% 84.12%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio - No
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes

camera Camera

Rear Camera 13 MP + 5 MP 48 MP + 8 MP + 5 MP + 5 MP 13 MP + 2 MP
Flash LED Flash LED flash LED Flash
Features 13 MP, f/1.9, 28mm (wide), AF
5 MP, f/2.2, depth sensor
Panorama, HDR
48 MP, f/2.0, (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm
5 MP, f/2.4, (macro)
5 MP, f/2.4, (depth)
panorama, HDR
13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, AF
2 MP, f/2.4, (depth)
HDR, Panorama
Video 1080p@30fps 1080p@30fps 1080p@30fps
Front Camera 8 MP, f/2.0 [Similar] 20 MP, f/2.2, 0.8µm
HDR
1080p@30fps [Similar]
8 MP, f/2.0, 26mm (wide)
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps HSPA, LTE-A HSPA 42.2/5.76 Mbps, LTE, 5G
Bluetooth 4.2, A2DP, LE 5.0, A2DP, LE 5.2, A2DP, LE, aptX HD
Wi-Fi Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB microUSB 2.0 2.0, Type-C 1.0 reversible connector, USB On-The-Go USB Type-C 2.0, USB On-The-Go
GPS Yes, with A-GPS, GLONASS, BDS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS, GLONASS, GALILEO, BDS, QZSS
Browser Yes Yes Yes

memory User Memory

Internal 32 GB, 3 GB RAM 128 GB, 6 GB RAM or 64 GB, 4 GB RAM (UFS 2.1) 128 GB, 8 GB RAM or 128 GB, 6 GB RAM UFS 2.2/2.1
Expandable Storage microSD, up to 512 GB (dedicated slot) microSDXC microSDXC
USB OTG Supported Supported Supported

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
Magnetic-Field Sensor (Compass) magnetic field sensor present magnetic field sensor present magnetic field sensor present
Gyroscope Sensor gyroscope sensor not present gyroscope sensor present gyroscope sensor present
NFC NFC supported NFC not supported NFC not supported

battery Battery

Type Non-removable Li-Po Battery Non-removable Li-Po Battery
Fast battery charging 15W
Non-removable Li-Po Battery
Fast battery charging
Capacity 4000 mAh 5000 mAh 5000 mAh
Stand by - - -
Talk Time - - -