Samsung Galaxy A51 5G vs Samsung Galaxy S21 Specs Comparison

Availability

Officially announced
Apr 08, 2020	Jan 14, 2021
Prices (MSRP)
$500	$800

Design

Dimensions
6.26 x 2.90 x 0.34 inches 158.9 x 73.6 x 8.7 mm	5.97 x 2.80 x 0.31 inches 151.7 x 71.2 x 7.9 mm
Weight
6.60 oz / 187.0 g	6.03 oz / 171.0 g Europe version - 169 g
Materials
Back: Plastic Frame: Aluminum	Back: Plastic Frame: Aluminum
Resistance
	Water, Dust; IP68
Biometrics
2D Face unlock, Optical in-screen fingerprint	2D Face unlock, Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Prism cube black	Phantom pink, Violet, Gray, White

Display

Size
6.5-inch, 87.37% screen-to-body	6.2-inch, 86.06% screen-to-body
Type
Super AMOLED, 60Hz	Dynamic AMOLED, 120Hz, HDR, 1300 nits
Resolution
2400x1080px, 20:9 ratio, 405 PPI	2400x1080px, 20:9 ratio, 424 PPI
Protection
Corning Gorilla Glass 3	Corning Gorilla Glass Victus

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
Untested	1.2 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Samsung Exynos 980 (8 nm)	Snapdragon 888 (5 nm) Europe version - Exynos 2100 S5E9840
Processor
Octa-core 2x2.2GHz Cortex-A77 6x1.8G​Hz Cortex-A55	Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680 Europe version - Octa-core, 1x2.91GHz Cortex-X1, 3x2.81G​Hz Cortex-A78, 4x2.2G​Hz Cortex-A55
GPU
Mali-G76 MP5	Adreno 660 Europe version - Mali-G78 MP14
Memory
6GB (LPDDR4)/128GB 8GB/128GB	8GB (LPDDR5)/128GB (UFS 3.0) 8GB/256GB
Storage expansion
microSDXC up to 1000 GB	not expandable
OS
Android (11, 10)	Android (13, 12, 11)

Battery

Type
4500 mAh, Li - Polymer	4000 mAh, Li - Polymer
Charging
Fast charging	Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging Qi and Powermat wireless charging, Reverse wireless charging
Charge speed
Wired: 25.0W	Wired: 25.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

4h 28min

Browsing

7h 47min

Video

7h 36min

Gaming

7h 9min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Quad camera	Triple camera
Main camera
48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	12 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.76" Pixel size: 1.8 μm
Second camera
12 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 13 mm Pixel size: 1.12 μm	12 MP (Ultra-wide, Autofocus) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm
Third camera
5 MP (Macro) Aperture size: F2.4 Focal Length: 40 mm	64 MP (Telephoto, OIS, PDAF) Aperture size: F2.0 Focal Length: 29 mm Sensor size: 1/1.7" Pixel size: 0.8 μm
Fourth camera
5 MP (Depth information) Aperture size: F2.2 Sensor size: 1/5" Pixel size: 1.12 μm
Flash
LED	LED
Video recording
4K UHD (30 fps), 1080p (120 fps), 720p (480 fps) Hyperlapse, EIS	8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS
Front
32 MP (HDR) Video capture: 1080p (30 fps)	10 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	Wi-Fi 6,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax
USB
Type-C, USB 2.0	Type-C, USB 3.2
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor
Hearing aid compatible
M3/T3	M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, ANT+	NFC, ANT+

Multimedia

Headphones
3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Multiple speakers
Features
Dolby Atmos	32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus
Screen mirroring
Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation

Cellular

5G Bands
n41, n71, SA, NSA Europe version - n41, n78, SA, NSA	n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
LTE Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 66, 71 Europe version - 1, 3, 4, 5, 7, 8, 12, 20, 28	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71
TDD Bands
38, 39, 40, 41 Europe version - 38, 40, 41	38, 39, 40, 41, 46, 48
3G Bands
1, 2, 4, 5 Europe version - 5, 8, 2, 1	1, 2, 4, 5, 8
Data Speed
LTE-A Pro Cat 16 (1000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
SIM type
	Nano SIM
HD Voice
Yes

Regulatory Approval

FCC approval
Date approved: Jul 15, 2020 FCC ID value: A3LSMA516U	Date approved: Dec 08, 2020 FCC ID value: A3LSMG991U
Measured SAR
Head: 1.18 W/kg Body: 1.20 W/kg Simultaneous Transmission: 3.25 W/kg Wireless Router: 1.37 W/kg	Head: 0.36 W/kg Body: 1.08 W/kg Simultaneous Transmission: 3.96 W/kg Wireless Router: 1.09 W/kg Phablet: 2.49 W/kg

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Full Specs Samsung Galaxy A51 5G Specs

Full Specs Samsung Galaxy S21 Specs PA Review Samsung Galaxy S21 Review