Samsung Galaxy A8 (2018) vs Samsung Galaxy A21
Compare phone and tablet specifications of up to three devices. Type a model name in the search field of our phone specs comparison tool or pick a popular device from the ones below.
Display
Size
Resolution
Technology
Super AMOLED
IPS LCD
Screen-to-body
75.60 %
79.20 %
Features
Scratch-resistant glass (Corning Gorilla Glass 4), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Hardware
System chip
Samsung Exynos 5 Octa 7885
Mediatek Helio P35
Processor
GPU
Mali-G71
PowerVR GE8320
RAM
Internal storage
64GB
32GB (eMMC 5.1), available to use: 19.8 GB
Storage expansion
microSDXC up to 256 GB
microSDXC up to 512 GB
Device type
Smartphone
Smartphone
OS
Android (9.0 Pie, 8.0 Oreo, 7.1 Nougat), Samsung One UI
Android (10), Samsung One UI
Battery
Capacity
3000 mAh
4000 mAh
Type
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Charging
Fast charging
Fast charging
Max charge speed
Wired: 15.0W
Camera
Rear
Single camera
Quad camera
Main camera
Specifications
Aperture size: F1.7
Aperture size: F1.8; Sensor size: 1/3.06"; Pixel size: 1 μm
Second camera
8 MP (Ultra-wide)
Specifications
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm
Third camera
2 MP (Macro)
Specifications
Aperture size: F2.4
Fourth camera
2 MP (Depth information)
Specifications
Aperture size: F2.4
Video recording
1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)
Features
Hyperlapse, EIS, Video calling, Video sharing
Front
16 MP (Dual-Camera)
13 MP
Design
Dimensions
Weight
the average is 6.3 oz (179 g)
the average is 6.3 oz (179 g)
Materials
Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Back: Plastic; Frame: Plastic
Resistance
Water, Dust; IP 68
Biometrics
Fingerprint (touch)
Fingerprint (touch)
Features
Notification light
Keys
Left: Volume control; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors
Black, Gold, Orchid grey, Blue
Black
Cellular
LTE (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), 26(850+), 28(700 APT), 66(AWS-3)
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), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 66(AWS-3), 71(600)
LTE (TDD)
Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
UMTS
850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz
Data Speed
Dual SIM
Yes
SIM type
Nano SIM
Nano SIM
HD Voice
Yes
Multimedia
Headphones
3.5mm jack
3.5mm jack
Speakers
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Features
Album art cover, Background playback
Screen mirroring
Wireless screen share
Wireless screen share
Radio
FM
FM
Additional microphone(s)
for Noise cancellation
Connectivity & Features
Bluetooth
5.0
5.0
Wi-Fi
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB
Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0
Features
Charging, Mass storage device
Charging
Location
GPS, A-GPS, Glonass, BeiDou
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass
Other
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
NFC
Hearing aid compatible
M4, T3
Regulatory Approval
FCC approval
Date approved
Nov 14, 2017
Apr 17, 2020
Measured SAR
Head
0.26 W/kg
0.42 W/kg
Body
0.76 W/kg
1.27 W/kg
Simultaneous Transmission
1.54 W/kg
1.27 W/kg
Wireless Router
0.98 W/kg
1.27 W/kg
Availability
Officially announced
Dec 19, 2017
Apr 08, 2020
