Phone Comparison - Samsung Galaxy S21 5G vs Oppo A57 vs Samsung Galaxy A56

Price Comparison (India) - -

general General Info

Manufacturer Samsung Oppo Samsung
Announced 2021, January 14 April 2022 March 2025
Status Coming soon. Exp. release 2021, January 29 Coming Soon - April 2022 Coming Soon - March 2025
Price Rs. 69,999 ($799.99) [Similarly Priced] - Rs. 41,999 ($0.00) [Similarly Priced]
Colors Phantom Gray, Phantom White, Phantom Violet, Phantom Pink Black, Blue, Lilac Pink, Olive, Graphite, Lightgray
Form Factor Candybar Candybar Candybar
Dimension 151.7 x 71.2 x 7.9 mm
(5.97 x 2.8 x 0.31 in)
163.8 x 75.1 x 8 mm
(6.45 x 2.96 x 0.31 in)
162.2 x 77.5 x 7.4 mm
(6.39 x 3.05 x 0.29 in)
Weight 169 g (5.96 oz) 186 g (6.56 oz) 198 g (6.98 oz)
SIM Type Single SIM (Nano-SIM and/or eSIM), Hybrid 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 model only)
CDMA2000 1xEV-DO
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA2000 1x
GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 800 / 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network LTE 1, 3, 5, 7, 8, 28, 34, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 32, 38, 40, 41, 66
5G Network SA/NSA/Sub6/mmWave 1, 5, 8, 28, 41, 77, 78 SA/NSA 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6
SAR EU - W/kg (head)
- W/kg (body)
- W/kg (head)
- W/kg (body)
0.61 W/kg (head)
1.05 W/kg (body)
Messaging
Build Features - Fingerprint Sensor (under display, ultrasonic)
Samsung Pay (Visa, MasterCard certified)
IP68 dust/water resistant (up to 1.5m for 30 mins)
Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+
- Fingerprint Sensor (side-mounted)
- Fingerprint Sensor (under display, optical)
IP67 dust/water resistant (up to 1m for 30 min)

hardware Hardware and OS

OS Android 11 Android 12 Android 15, up to 6 major Android upgrades
User Interface One UI 3.1 ColorOS 12.1 One UI 7
Processor Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International / Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680 - USA/China/Korea, Exynos 2100 - International / Qualcomm Snapdragon 888 - USA/China/Korea Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), MediaTek MT6833P Dimensity 810 5G (6 nm) Octa-core (1x2.9 GHz & 3x2.6 GHz & 4x1.9 GHz), Exynos 1580 (4 nm)
GPU Mali-G78 MP14 - International / Adreno 660 - USA/China/Korea Mali-G57 MC2 Xclipse 540
RAM 8 GB 8 GB 12 GB
Internal Memory 256 GB 128 GB 256 GB
External Memory microSDXC (uses shared SIM slot) microSDXC No

display Display

Type FHD+ Dynamic AMOLED 2X Display
120Hz Refresh Rate
HDR10+
1300 nits (peak)
Corning Gorilla Glass Victus
Always-on display
HD+ IPS LCD Screen
90Hz Refresh Rate
480 nits (typ), 600 nits (HBM)
FHD+ Super AMOLED Screen
120Hz, HDR10+, 1200 Nits (HBM), 1900 Nits (peak)
Corning Gorilla Glass Victus+ Protection
Colors 16M Colour 16M colors 16M colors
Size 6.2 inches 6.56 inches 6.7 inches
Resolution 1080 x 2400 pixels (424 ppi) 720 x 1612 pixels (269 ppi) 1080 x 2340 pixels (385 ppi)
Screen-to-Body Ratio 86.12% 84.12% 87.51%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack no yes no
Radio FM radio (Snapdragon model only; market/operator dependent) No No
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker

camera Camera

Rear Camera 12 MP + 64 MP + 12 MP 13 MP + 2 MP 50 MP + 12 MP + 5 MP
Flash LED Flash LED Flash LED Flash
Features 12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, Dual Pixel PDAF, OIS
64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom
12 MP, f/2.2, 13mm (ultrawide), 1.4µm, Super Steady video
Auto-HDR, Panorama
13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, AF
2 MP, f/2.4, (depth)
HDR, Panorama
50 MP, f/1.8, (wide), 1/1.56", 1.0µm, PDAF, OIS
12 MP, f/2.2, 123˚ (ultrawide), 1/3.06", 1.12µm
5 MP, f/2.4, (macro)
Best Face, Panorama, HDR
Video 8K@24/30fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS 1080p@30fps 4K@30fps, 1080p@30/60fps, gyro-EIS
Front Camera 10 MP, f/2.2, 26mm (wide), 1/3.2", 1.22µm, Dual Pixel PDAF, Dual video call, Auto-HDR, 4K@30/60fps, 1080p@30fps [Similar] 8 MP, f/2.0, 26mm (wide)
1080p@30fps [Similar]
12 MP, f/2.2, (wide)

4K@30fps, 1080p@30/60fps, 10-bit HDR [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G HSPA 42.2/5.76 Mbps, LTE, 5G HSPA, LTE, 5G
Bluetooth 5.0, A2DP, LE 5.2, A2DP, LE, aptX HD 5.3, A2DP, LE
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, 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/6, dual-band, Wi-Fi Direct
USB USB Type-C 3.2, USB On-The-Go USB Type-C 2.0, USB On-The-Go USB Type-C 2.0, OTG
GPS Yes, with A-GPS, GLONASS, BDS, GALILEO Yes, with A-GPS, GLONASS, GALILEO, BDS, QZSS GPS, GALILEO, GLONASS, BDS, QZSS
Browser Yes Yes Yes

memory User Memory

Internal 256 GB, 8 GB RAM or 128 GB, 8 GB RAM UFS 3.1 128 GB, 8 GB RAM or 128 GB, 6 GB RAM UFS 2.2/2.1 256 GB, 12 GB RAM or 256 GB, 8 GB RAM or 128 GB, 8 GB RAM UFS 3.1
Expandable Storage microSDXC (uses shared SIM slot) microSDXC No
USB OTG Supported Supported Supported

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor not 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 present gyroscope sensor present gyroscope sensor present
Barometer Sensor barometer sensor present barometer sensor not present barometer sensor not present
NFC NFC supported NFC not supported NFC not supported

battery Battery

Type Non-removable Li-Po Battery
Fast battery charging 25W
USB Power Delivery 3.0
Fast Qi/PMA wireless charging 15W
Power bank/Reverse wireless charging 4.5W
Non-removable Li-Po Battery
Fast battery charging
Non-removable Li-ion Battery
Fast Battery Charging 45W wired, 65% in 30 min, 100% in 68 min
Capacity 4000 mAh 5000 mAh 5000 mAh
Stand by - - -
Talk Time - - -