Samsung Galaxy S8 vs Samsung Galaxy A21s Specs Comparison

Design

Dimensions
5.86 x 2.68 x 0.31 inches 148.9 x 68.1 x 8.0 mm	6.44 x 2.96 x 0.35 inches 163.7 x 75.3 x 8.9 mm
Weight
5.47 oz (155.0 g)	6.77 oz (192.0 g)
Materials
Back: Glass (Corning Gorilla Glass 5) Frame: Aluminum
Resistance
Water, Dust; IP68
Biometrics
Iris scanner, 2D Face unlock, Fingerprint (touch)	2D Face unlock, Fingerprint (touch)
Keys
Left: Volume control, Other; Right: Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Midnight black, Orchid gray, Arctic silver, Coral blue, Maple gold, Rose pink, Burgundy red	Black, White, Blue, Red

Display

Size
5.8-inch	6.5-inch
Resolution
2960x1440px, 18.5:9 ratio, 570 PPI	1600x720px, 20:9 ratio, 270 PPI
Technology
Super AMOLED	TFT
Screen-to-body
84.26 %	82.94 %
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor	Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 835 MSM8998 (10 nm)	Samsung Exynos 850
Processor
Octa-core 2350 MHz Kryo 280	Octa-core 8x 2.0GHz Cortex-A55
GPU
Adreno 540	Mali-G76
RAM
4GB (LPDDR4)	3GB (LPDDR4)
Internal storage
64GB	32GB (eMMC 5.1), available to use: 19.5 GB
Storage expansion
microSDXC up to 256 GB	microSDXC up to 512 GB
OS
Android (9.0 Pie, 8.0 Oreo, 7.0 Nougat), Samsung One UI	Android (10), Samsung One UI

Battery

Capacity
3000 mAh	5000 mAh
Type
Li - Ion	Li - Polymer
Charging
Qualcomm Quick Charge 2.0, Qi and Powermat wireless charging	Fast charging

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

Untested

Browsing

Untested

Video

11h 9min

Gaming

7h 48min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Single camera	Quad camera
Main camera
12 MP (OIS, PDAF) Aperture size: F1.7 Focal length: 26 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
	8 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/4" Pixel size: 1.12 μm
Third camera
	2 MP (Macro) Aperture size: F2.4
Fourth camera
	2 MP (Depth information) Aperture size: F2.4
Flash
LED	LED
Video recording
3840x2160 (4K UHD) (30 fps), 2560x1440 (QHD), 1920x1080 (Full HD) (60 fps), 1280x720 (HD) (240 fps) HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, Video light, EIS, Video calling, Video sharing	1920x1080 (Full HD) (30 fps)
Front
8 MP (Wide Angle, Autofocus, HDR), Video capture: 2560x1440 (QHD)	13 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0, Yes	5.0
WLAN
802.11 a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot
USB
Type-C, USB 3.1	Type-C, USB 2.0
Hearing aid compatible
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
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer	Accelerometer, Gyroscope
Other
NFC, ANT+, UMA (Wi-Fi Calling), Tethering, Computer sync, OTA sync	NFC

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
32-Bit DAC, aptX-HD
Screen mirroring
DLNA,Wireless screen share,MHL	Wireless screen share
Additional microphone(s)
Noise cancellation, Video recording

Cellular

4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3)	Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
4G (TDD)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)	Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 5(850), 8(900)	Bands 1(2100), 2(1900), 5(850), 8(900)
Data Speed
LTE-A Pro Cat 16 (1000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
	Yes
SIM type
Nano SIM	Nano SIM
HD Voice
Yes

Regulatory Approval

FCC approval
Date approved: Apr 06, 2017 FCC ID value: A3LSMG950U
Measured SAR
Head: 0.49 W/kg Body: 0.48 W/kg Simultaneous Transmission: 1.53 W/kg Wireless Router: 0.46 W/kg

Buyers information

MSRP
	€ 240

Availability

Officially announced
Mar 29, 2017	May 15, 2020

Alternative variants

International version

System chip	Samsung Exynos 9 Octa 8895 (10 nm)
Processor	Octa-core 2300 MHz Exynos M2 "Mongoose" and ARM Cortex-A53
GPU	Mali-G71 MP20
4G (FDD)	Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 32(1500 L-band), 66(AWS-3)
4G (TDD)	Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
FCC approval	Date approved: Sep 05, 2017 FCC ID value: A3LSMG950F
Measured SAR	Head: 0.38 W/kg Body: 0.75 W/kg Simultaneous Transmission: 1.55 W/kg Wireless Router: 1.09 W/kg

with 4GB RAM

RAM	4GB
Internal storage	64GB

for T-Mobile

4G (FDD)	Bands 2(1900), 4(AWS-1), 5(850), 12(700 a)
3G	Bands 5(850), 4(1700/2100), 2(1900), 1(2100)
VoLTE	Yes

with 6GB RAM

RAM	6GB
Internal storage	64GB

for Verizon Wireless

4G (FDD)	Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 13(700 c), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT)
4G (TDD)	Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
3G	Bands 5(850), 8(900), 2(1900), 1(2100)

for U.S. Cellular

4G (FDD)	Bands 2(1900), 4(AWS-1), 5(850), 8(900), 12(700 a), 13(700 c), 17(700 b), 18(800 Lower), 19(800 Upper), 25(1900+)
4G (TDD)	Bands 38(2600), 39(1900+), 40(2300)
Data Speed	LTE-A, HSPA, UMTS

with Dual SIM

System chip	Samsung Exynos 9 Octa 8895 (10 nm)
Processor	Octa-core 2500 MHz Exynos M2 "Mongoose"and ARM Cortex-A53
GPU	Mali-G71 MP20
Dual SIM	Yes

Links

Full specifications
Samsung Galaxy S8 Specs	Samsung Galaxy A21s Specs
PhoneArena Review
Samsung Galaxy S8 Review	Samsung Galaxy A21s Review
User Reviews
Samsung Galaxy S8 User Reviews