Asus ZenFone 8 vs Samsung Galaxy S21 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

9.0	8.5
Asus ZenFone 8	Samsung Galaxy S21
Released · May 13, 2021	Released · Jan 29, 2021
5.9-inch · 2400x1080px	6.2-inch · 2400x1080px
Dual camera	Triple camera
6GB · 128GB	8GB · 128GB
4000 mAh	4000 mAh
	Check prices

Availability

Officially announced
May 12, 2021	Jan 14, 2021
MSRP
€ 599	$ 800

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, 82.76% screen-to-body	6.2-inch, 86.06% screen-to-body
Type
AMOLED, 120Hz, HDR, 1100 nits	Dynamic AMOLED, 120Hz, HDR, 1300 nits
Resolution
2400x1080px, 20:9 ratio, 446 PPI	2400x1080px, 20:9 ratio, 424 PPI
Protection
Corning Gorilla Glass Victus	Corning Gorilla Glass Victus

Hardware

System chip
Snapdragon 888 SM8350 (5 nm)	Snapdragon 888 (5 nm)
Processor
Octa-core 2840 MHz Kryo 680	Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680
GPU
Adreno 660	Adreno 660
Memory
6GB (LPDDR5)/128GB (UFS 3.1) 8GB/128GB 8GB/256GB 16GB/256GB	8GB (LPDDR5)/128GB (UFS 3.0) 8GB/256GB
Storage expansion
not expandable	not expandable
OS
Android (11)	Android (13, 12, 11)

Battery

Type
4000 mAh	4000 mAh, 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

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

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
8K UHD (24 fps), 4K UHD (120 fps), 1080p (240 fps), 720p (480 fps) Time-lapse video, Picture-taking during video recording, EIS	8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS
Front
12 MP (PDAF) Video capture: 4K UHD (30 fps)	10 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)

Connectivity & Features

Bluetooth
5.2, Yes	5.0
WLAN
a,b,g,n,ac,Wi-Fi 6,tri-band MIMO, 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 2.0	Type-C, USB 3.2
Sensors
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
Location
GPS, A-GPS, Glonass, Galileo, QZSS, NavIC, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
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
Radio
FM, Stereo, RDS
Additional microphone(s)
Noise cancellation

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, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 30(2300 WCS), 66(AWS-3), 71(600)	Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30(2300 WCS), 66(AWS-3), 71(600)
4G (TDD)
Bands 34, 38, 39, 40, 41, 42	Bands 38, 39, 40, 41, 46, 48
3G
Bands 1, 2, 3, 4, 5, 6, 8, 19	Bands 1, 2, 4, 5, 8
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

Alternative variants

With 8GB RAM


Memory	8GB

with 256GB storage


Memory	256GB

With 8GB RAM and 256GB internal storage


Memory	8GB/256GB

for Europe


System chip	Samsung Exynos 2100 (5 nm)
Processor	Octa-core 2900 MHz 1x2.91GHz Cortex-X1 3x2.81GHz Cortex-A78 4x2.2GHz 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


Memory	16GB/256GB

Global


5G	Bands n1, n2, n3, n5, n7, n8, n12, n20, n28, n38, n77, n78, SA, NSA
4G (FDD)	Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28
4G (TDD)	Bands 34, 38, 39, 40, 41, 42
3G	Bands 1, 2, 3, 4, 5, 6, 8, 19

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