Asus ZenFone 8 vs Samsung Galaxy S21 Specs Comparison

Design

Dimensions
5.83 x 2.70 x 0.35 inches 148 x 68.6 x 8.9 mm	5.97 x 2.80 x 0.31 inches 151.7 x 71.2 x 7.9 mm
Weight
5.96 oz (169.0 g)	6.03 oz (171.0 g)
Materials
Back: Glass (Corning Gorilla Glass 3) Frame: Aluminum	Back: Plastic Frame: Aluminum
Resistance
Water, Dust; IP68	Water, Dust; IP68
Biometrics
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
Obsidian Black, Horizon Silver	Phantom pink, Violet, Gray, White

Display

Size
5.9-inch	6.2-inch
Resolution
2400x1080px, 20:9 ratio, 446 PPI	2400x1080px, 20:9 ratio, 424 PPI
Technology
AMOLED	Dynamic AMOLED
Refresh rate
120Hz	120Hz (adaptive)
Screen-to-body
82.76 %	86.06 %
Peak brightness
1100 cd/m2 (nit)	1300 cd/m2 (nit)
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor	HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 888 SM8350 (5 nm)	Qualcomm Snapdragon 888 (5 nm)
Processor
Octa-core 2840 MHz Kryo 680	Octa-core 1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680
GPU
Adreno 660	Adreno 660
RAM
6GB (LPDDR5)	8GB (LPDDR5)
Internal storage
128GB (UFS 3.1)	128GB (UFS 3.0)
Storage expansion
not expandable	not expandable
OS
Android (11), Zen 8 UI	Android (13, 12, 11), Samsung One UI

Battery

Capacity
4000 mAh	4000 mAh
Type
	Li - Polymer
Charging
Qualcomm Quick Charge 4	Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging
Charge speed
Wired: 30.0W	Wired: 25.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

6h 11min

Browsing

10h 12min

Video

11h 23min

Gaming

8h 42min

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
Dual camera	Triple camera
Main camera
64 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 27 mm Sensor size: 1/1.7" Pixel size: 1.6 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, PDAF) Aperture size: F2.2 Focal Length: 14 mm Sensor size: 1/2.55" Pixel size: 1.4 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
	64 MP (Telephoto, OIS, PDAF) Aperture size: F2.0 Focal Length: 29 mm Sensor size: 1/1.7" Pixel size: 0.8 μm
Flash
LED	LED
Video recording
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (120 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (480 fps) Time-lapse video, Picture-taking during video recording, EIS	7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps) OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS
Front
12 MP (PDAF), Video capture: 3840x2160 (4K UHD) (30 fps)	10 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps)

Connectivity & Features

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

Multimedia

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

Cellular

5G
Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n38, n40, n66, n71, n77, n78, SA, NSA	Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 30(2300 WCS), 66(AWS-3), 71(600)	Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 66(AWS-3), 71(600)
4G (TDD)
Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+), 42(3500)	Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
3G
Bands 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 6(800), 8(900), 19(800)	Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A Pro Cat 20 (2000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
Dual SIM
Yes
SIM type
Nano SIM	Nano SIM

Regulatory Approval

FCC approval
	Date approved: Dec 08, 2020 FCC ID value: A3LSMG991U
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

Buyers information

MSRP
€ 599	$ 800
In The Box
	C to C Data Cable, Ejection Pin

Availability

Officially announced
May 12, 2021	Jan 14, 2021

Alternative variants

With 8GB RAM

RAM	8GB

with 256GB storage

Internal storage	256GB

With 8GB RAM and 256GB internal storage

RAM	8GB
Internal storage	256GB

for Europe

System chip	Samsung Exynos 2100 (5 nm)
Processor	Octa-core 2900 MHz 1x 2.91GHz Cortex-X1 + 3x 2.81GHz Cortex-A78 + 4x 2.2GHz 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

With 16GB RAM and 256GB internal storage

RAM	16GB
Internal storage	256GB

Global

5G	Bands n1, n2, n3, n5, n7, n8, n12, n20, n28, n38, n77, n78, SA, NSA
4G (FDD)	Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT)
4G (TDD)	Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+), 42(3500)
3G	Bands 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 6(800), 8(900), 19(800)

Links

Full specifications
Asus ZenFone 8 Specs	Samsung Galaxy S21 Specs
PhoneArena Review
Asus ZenFone 8 Review	Samsung Galaxy S21 Review
User Reviews
Asus ZenFone 8 User Reviews	Samsung Galaxy S21 User Reviews