Samsung Galaxy S21 vs Samsung Galaxy M55 vs Samsung Galaxy S20 Specs Comparison

Availability

Officially announced
Jan 14, 2021	Mar 28, 2024	Feb 11, 2020
Prices (MSRP)
$800		$1000

Design

Dimensions
5.97 x 2.80 x 0.31 inches 151.7 x 71.2 x 7.9 mm	6.45 x 3.01 x 0.31 inches 163.9 x 76.5 x 7.8 mm	5.97 x 2.72 x 0.31 inches 151.7 x 69.1 x 7.9 mm
Weight
6.03 oz / 171.0 g	6.35 oz / 180.0 g	5.78 oz / 163.0 g
Materials
Back: Plastic Frame: Aluminum		Back: Glass (Corning Gorilla Glass 6) Frame: Aluminum
Resistance
Water, Dust; IP68		Water, Dust; IP68
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint	Optical in-screen fingerprint	2D Face unlock, Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Phantom pink, Violet, Gray, White	Dark Blue, Light Green	Cloud blue, Cosmic grey, Cloud pink, Cosmic white

Display

Size
6.2-inch, 86.06% screen-to-body	6.7-inch, 86.53% screen-to-body	6.2-inch, 88.59% screen-to-body
Type
Dynamic AMOLED, 120Hz, HDR, 1300 nits	Super AMOLED, 1000 nits	Dynamic AMOLED, 120Hz, HDR
Resolution
2400x1080px, 20:9 ratio, 424 PPI	2400x1080px, 20:9 ratio, 393 PPI	3200x1440px, 20:9 ratio, 566 PPI
Protection
Corning Gorilla Glass Victus		Corning Gorilla Glass 6

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested	Untested
Bright Min
1.2 (Good)	Untested	1.5 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 888 (5 nm)	Snapdragon 7 Gen 1 SM7450-AB (4 nm)	Snapdragon 865 SM8250 (7 nm)
Processor
Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680	1x2.4GHz Cortex-A710 3x2.3​6GHz Cortex-A710 4x1.8​GHz Cortex-A510	Octa-core 1x2.84GHz Kryo 585 3x2.42GHz Kryo 585 4x1.80GHz Kryo 585
GPU
Adreno 660	Adreno 644	Adreno 650
Memory
8GB (LPDDR5)/128GB (UFS 3.0) 8GB/256GB	8GB/128GB	12GB (LPDDR5)/128GB (UFS 3.0) 8GB/128GB
Storage expansion
not expandable	microSDXC	microSDXC up to 1000 GB
OS
Android (13, 12, 11)	Android (14)	Android (13, 12, 11, 10)

Battery

Type
4000 mAh, Li - Polymer	5000 mAh	4000 mAh, Li - Polymer
Charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging Qi and Powermat wireless charging, Reverse wireless charging	Fast charging	Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging Qi and Powermat wireless charging, Reverse wireless charging
Charge speed
Wired: 25.0W Wireless: 15.0W	Wired: 45.0W	Wired: 25.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

4h 28min

Browsing

7h 47min

Video

7h 36min

Gaming

7h 9min

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

5h 20min

Browsing

7h 45min

Video

10h 20min

Gaming

7h 43min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Triple camera	Triple camera	Triple camera
Main camera
12 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.76" Pixel size: 1.8 μm	50 MP (OIS, PDAF) Aperture size: F1.8 Sensor size: 1/1.56" Pixel size: 1.0 μm	12 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.7" Pixel size: 1.8 μm
Second camera
12 MP (Ultra-wide, Autofocus) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	8 MP (Ultra-wide) Aperture size: F2.2	12 MP (Ultra-wide, Autofocus) Aperture size: F2.2 Focal Length: 13 mm Pixel size: 1.4 μm
Third camera
64 MP (Telephoto, OIS, PDAF) Aperture size: F2.0 Focal Length: 29 mm Sensor size: 1/1.7" Pixel size: 0.8 μm	2 MP (Macro) Aperture size: F2.4	64 MP (Telephoto, OIS, PDAF) Aperture size: F2.0 Sensor size: 1/1.7" Pixel size: 0.8 μm
Flash
LED	LED	LED
Video recording
8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS	4K UHD (30 fps)	8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, EIS
Front
10 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)	50 MP	10 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)

Connectivity & Features

Bluetooth
5.0	5.2	5.0
WLAN
a,b,g,n,ac,Wi-Fi 6,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax	a,b,g,n,ac,Wi-Fi 6 Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax	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 3.2	Type-C, USB 2.0	Type-C, USB 3.1
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, 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, QZSS, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
Other
NFC, ANT+	NFC	NFC, ANT+

Multimedia

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

Cellular

5G Bands
n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave	n1, n3, n5, n7, n8, n20, n28, n38, n40, n41, n66, n77, n78	n1, n3, n5, n7, n8, n28, n40, n77, n78, SA, NSA, Sub-6
LTE Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71	1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 66	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66
TDD Bands
38, 39, 40, 41, 46, 48	38, 40, 41	38, 39, 40, 41
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 8	1, 2, 4, 5, 8
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS		LTE-A Pro Cat 20 (2000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
SIM type
Nano SIM	Dual Nano SIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Dec 08, 2020 FCC ID value: A3LSMG991U		Date approved: Jan 24, 2020 FCC ID value: A3LSMG981U
Measured SAR
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		Head: 1.07 W/kg Body: 1.03 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.25 W/kg Phablet: 3.99 W/kg

Alternative variants

with 256GB storage

Memory	256GB

Global variant

System chip	Samsung Exynos 990 (7 nm)
Processor	Octa-core 2700 MHz 2x2.73GHz Exynos M5 2x2.5GHz Cortex-A75 4x2.0G​Hz Cortex-A55
GPU	Mali G77 MP11

for Europe

System chip	Samsung Exynos 2100 (5 nm)
Processor	Octa-core 2900 MHz 1x2.91GHz Cortex-X1 3x2.81G​Hz Cortex-A78 4x2.2G​Hz Cortex-A55
GPU	Mali G78 MP14
Weight	5.96 oz / 169.0 g
5G Bands	SA, NSA, Sub-6
FCC approval	Date approved: Dec 18, 2020 FCC ID value: A3LSMG991B
Measured SAR	Head: 0.42 W/kg Body: 0.94 W/kg Simultaneous Transmission: 3.96 W/kg Wireless Router: 1.34 W/kg Phablet: 2.37 W/kg

non 5G variant

Memory	8GB
FCC approval	Date approved: Jan 28, 2020 FCC ID value: A3LSMG980F
Measured SAR	Head: 0.37 W/kg Body: 1.01 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.34 W/kg Phablet: 2.67 W/kg

for Verizon

Storage expansion	not expandable
5G Bands	n260, n261, mmWave
LTE Bands	2, 3, 4, 5, 7, 8, 13, 18, 19, 20, 26, 28, 66
TDD Bands	34, 39, 46, 48
Hearing aid compatible	M4/T3

Discover more

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

Full Specs Samsung Galaxy M55 Specs

Full Specs Samsung Galaxy S20 Specs PA Review Samsung Galaxy S20 Review