Compare Samsung Galaxy S21 Ultra vs Samsung Galaxy A51
Variants
International
USA / China
Connectivity
Ports
USB-C 3.2
Wireless Connectivity
WiFi 6, Bluetooth 5, NFC
Construction
Battery | Capacity
5000 mAh
4500 mAh
Camera | Front
40MP Phase Detection AF, FOV 80°, F2.2, 0.7 µm
32MP f/2.2
Camera | Rear
48MP f/2.0 (Main), 12MP f/2.2 (Ultra-Wide), 5MP f/2.2 (Depth), 5MP f/2.4 (Macro)
Camera | Rear | Telephoto
10MP Dual Pixel AF, Optical 10x, FOV 10°,OIS, F4.9, 1.22µm + 10MP Dual Pixel AF, Optical 3x, FOV 35°,OIS, F2.4, 1.22µm
Camera | Rear | Ultra-Wide
12MP Dual Pixel AF, FOV 120°, F2.2, 1.4µm
Camera | Rear | Wide
108MP Phase Detection AF, FOV 83°, OIS, F1.8, 0.8µm
Colors
Phantom Black, Phantom Silver, Phantom Violet, Phantom Pink, Phantom Gold, Phantom Red
Material
Glass front (Gorilla Glass Victus), glass back (Gorilla Glass), aluminum frame
Dimensions
Size | Depth
8.9 mm
8.7 mm
Size | Height
161.5 mm
158.9 mm
Size | Width
75.6 mm
73.6 mm
Weight
227 g
187 g
Display
Aspect Ratio
20:9
Display Diagonal
6.8 inch
6.5"
Display Type
Dynamic AMOLED 2X (OLED)
Super AMOLED
Pixel Density
515 ppi
Refresh Rate
120 Hz
Resolution
QHD+, 3200x1440
2400 x 1080
Function
Audio
UHQ 32-bit &DSD64/128 support; PCM: Up to 32 bits, DSD: DSD64/128
Chipset
8 Core (2x 2.2GHz + 6x 1.8GHz)
Fast Charging
USB PD 3.0 (PPS) certified Fast Charging
GPS
GPS, Galileo, Glonass, BeiDou, A-GPS
HDR
HDR10+ certified
Operating System
Android 11
SIM
Single or dual Nano SIM, 5G
Security
Ultrasonic Fingerprint, Face recognition
Sensor
Ultrasonic Fingerprint sensor, Accelerometer, Barometer, Gyro sensor, Geomagnetic sensor, Hall sensor Proximity sensor, Ambient Light Sensor
Variable Framerate
10~120Hz
Weather Resistance
IP68
Wireless Charging
Fast Wireless Charging 2.0
Performance
Memory | Capacity
12 or 16 GB
6 GB; 8 GB
Memory | Type
LPDDR5
Storage
128, 256, or 512 GB UFS 3.X
128 GB, MicroSD
Production
Accessory
Digitizer: S Pen, sold separately
Debut
2021-01-14 (Galaxy Unpacked 2021)
2020-04-08
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