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
Asus ZenFone 8
8.5
Samsung Galaxy S21
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
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

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
3x2.81G​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
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
FCC OKs Cingular\'s purchase of AT&T Wireless