Asus Zenfone 8 vs Samsung Galaxy S21 5G: Comparison

Comparison of features, performance, design, battery, camera and connectivity between the following smartphones: Asus Zenfone 8 vs Samsung Galaxy S21 5G. The complete information of specifications to decide which to buy.

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Technical data sheets

Basics

Score

Ki Price/Quality
Score
8.7 Ki Price/Quality
Score
8.9 Ki Price/Quality
Score
Design and Screen score 7.8 Design & Materials 8.6 Design & Materials
Performance and Hardware score 8.5 Performance & Hardware 8.6 Performance & Hardware
Camera score 7.8 Camera 8.5 Camera
Connectivity score 8.9 Connectivity 9.0 Connectivity
Battery score 6.3 Battery 6.4 Battery

User reviews

User score --
8.9
23 reviews

Technical specifications of the Asus Zenfone 8 vs Samsung Galaxy S21 5G

Specs Asus Zenfone 8 price compare Asus Zenfone 8
Global · 8GB · 128GB · VA
stores to buy Samsung Galaxy S21 5G Samsung Galaxy S21 5G
Global · 8GB · 128GB · SM-G991B
Inches 5.9" 6.2"
Resolution FHD+ FHD+
Usable surface 82% useful 88% useful
Aspect Ratio 20:9 20:9
Dimensions 68.5 mm
148.0 mm
8.9 mm
71.2 mm
151.7 mm
7.9 mm
Weight 169 g 169 g
Micro SnapD. 888
Octa-Core
Exynos 2100
Octa-Core
RAM 8 GB RAM 8 GB RAM
Storage 128 GB 128 GB
AnTuTu 745.787
v9
755.000
v9
Battery 4000 mAh 4000 mAh
Main Camera 1
64 Mpx · ƒ/1.8
IMX686 Exmor RS
2
1
12 Mpx · ƒ/1.8
IMX555
2 3
Selfie Camera SELF 12 Mpx · ƒ/2.45 SELF 10 Mpx · ƒ/2.2
Bands
OS Android 11 Red Velvet Cake Android 11 Red Velvet Cake

Brand

Brand Asus Samsung
Aliases ZS673KS SM-G991B

Release Date

Release date May 2021,
6 months ago
January 2021,
10 months ago
State On Sale On Sale
Market Global Global

Design & Materials

Structure

Asus Zenfone 8
Samsung Galaxy S21 5G
Asus Zenfone 8
Samsung Galaxy S21 5G
Size
68.5 mm
148.0 mm
8.9 mm
Print 3D Model
71.2 mm
151.7 mm
7.9 mm
Print 3D Model
Weight 169 g 169 g
Usable surface 82 % 88 %
Materials Aluminium alloy Plastic, Aluminium
Resistance IP68 IP68
Colors
Silver

Gray
White

Pink

Gray

Violet

Screen

Diagonal 5.9" 6.2"
Type Oled Amoled Dynamic Amoled 2X
Aspect Ratio 20:9 20:9
Resolution FHD+
1080 x 2400 px
FHD+
1080 x 2400 px
Density 445 Pixels per inch 424 Pixels per inch

Others

Others
  • Hole-punch Notch
  • Refresh rate 120 Hz
  • Peak brightness - 1100 cd/m²
  • HDR10
  • HDR10+
  • DCI-P3
  • Full sRGB standard
  • 105% NTSC
  • Scratch resistant
  • Corning Gorilla Glass 7 Victus
  • Capacitive
  • Multi-touch
  • Frameless
  • Hole-punch Notch
  • Refresh rate 120 Hz
  • Peak brightness - 1300 cd/m²
  • Always-On Display
  • HDR10+
  • Scratch resistant
  • Corning Gorilla Glass 7 Victus
  • Capacitive
  • Multi-touch
  • Frameless

User reviews

Is it a drop-resistant and scratch-resistant smartphone?
--
8.0
Do you think it's a nice phone?
--
9.6
Is it comfortable?
--
9.7
Can you see it well in the sunlight?
--
9.1
Number of reviews
--
23 reviews

Performance & Hardware

Processor

Model Qualcomm Snapdragon 888 Samsung Exynos 2100
CPU 1x Cortex X1 2.84GHz + 3x Cortex A78 2.42GHz + 4x Cortex A55 1.8GHz 1x Cortex-X1 2,91 GHz + 3x Cortex-A78 2,81 GHz + 4x Cortex-A55 2,21 GHz.
Type Octa-Core Octa-Core
Manufacturing 5 nm 5 nm
Frequency 2.84 GHz 2.91 GHz
64 Bits Yes Yes

Graphics

GPU Adreno 660 ARM Mali-G78 MC14

RAM

RAM 8 GB 8 GB
Type RAM LPDDR5 RAM LPDDR5

Antutu

Score
745.787
Antutu v9
Overall performance better than 97% of devices
755.000
Antutu v9
Overall performance better than 97% of devices

Storage

Capacity 128 GB 128 GB
Type UFS Storage 3.1 UFS Storage 3.1
SD Slot No No

Security

Fingerprint Yes, in screen Yes, in screen

Sensors

Sensors
  • Fingerprint
  • Proximity
  • Light sensor
  • Accelerometer
  • Compass
  • Gyroscope
  • Gravity
  • Hall
  • Fingerprint
  • Proximity
  • Light sensor
  • Accelerometer
  • Compass
  • Gyroscope
  • Barometer
  • Hall
  • Geomagnetic

Others

Notifications LED -- --
Cooling system No No
Gaming buttons No No

User reviews

Does it have good sound?
--
9.3
Does it work smoothly in everyday use?
--
9.4
What's your experience been with demanding games?
--
8.6
Number of reviews
--
23 reviews

Camera

Main

No. of cameras Double rear camera Triple rear camera
1
Camera type

Standard

Standard
Resolution 64 Mpx 12 Mpx
Sensor Sony IMX686 Exmor RS Sony IMX555
Type CMOS CMOS
Aperture ƒ/ 1.8 ƒ/ 1.8
ISO -- --
Pixel size 0.80 µm 1.80 µm
Pixel Binning 1-4 (2x2) --
Sensor size 1/1.7 1/1.76
2
Camera type

Wide Angle + Macro

Wide Angle + Macro
Resolution
12 Mpx
12.2 Mpx
Sensor
Sony IMX363 Exmor RS
Sony IMX563
Type
CMOS BSI
CMOS
Aperture
ƒ/ 2.2
ƒ/ 2.2
Pixel size
1.40 µm
1.40 µm
Pixel Binning
--
--
Sensor size
1/2.55
1/2.55
3
Camera type
--

Telephoto + portrait
Resolution
64 Mpx
Sensor
Samsung Bright S5KGW2
Type
ISOCELL
Aperture
ƒ/ 2.0
Pixel size
0.80 µm
Pixel Binning
--
Sensor size
1/1.72

Features

Flash LED LED
Optical Stabilisation Yes Yes
Slow Motion Video Yes,
480 fps
Yes,
960 fps
Others
  • 4K Video
  • 8K Video
  • Digital zoom
  • Dual camera
  • Optical Stabilization (OIS)
  • Digital image stabilization
  • Phase detection autofocus (PDAF)
  • Continuous autofocus
  • Autofocus
  • Touch focus
  • White balance settings
  • Continuous shooting
  • Exposure compensation
  • Scene mode
  • Self-timer
  • Face detection
  • RAW
  • HDR
  • Panorama
  • Geotagging
  • ISO settings
  • 4K Video
  • 8K Video
  • Optical zoom
  • Digital zoom
  • Triple camera
  • Digital image stabilization
  • Optical Stabilization (OIS)
  • Phase detection autofocus (PDAF)
  • Manual focus
  • Continuous autofocus
  • Autofocus
  • Touch focus
  • ISO settings
  • Continuous shooting
  • Scene mode
  • Self-timer
  • White balance settings
  • Face detection
  • RAW
  • HDR
  • Panorama
  • Night Mode
  • Geotagging
  • Exposure compensation

Selfie

SELF
Camera type

Dedicated

Dedicated
Resolution 12 Mpx 10 Mpx
Sensor Sony IMX663 Sony IMX374
Type CMOS CMOS
Aperture ƒ/ 2.45 ƒ/ 2.2
Pixel size 1.22 µm 1.22 µm
Pixel Binning -- --
Sensor size 1/2.93 1/3.2
Others
--
--

DxOMark Score

DxOMark Score
120
Mobile
126
Photo
108
Video
116
Mobile
123
Photo
93
Video

User reviews

Quality of daytime photos
--
9.6
Quality of nighttime photos
--
9.1
Quality of selfies
--
9.6
Does it have a powerful flash?
--
8.9
Number of reviews
--
23 reviews

Connectivity

Network compatibility

5G
  • n1 (2100)
  • n2 (1900 PCS)
  • n3 (1800)
  • n5 (850)
  • n7 (2600)
  • n8 (900)
  • n12 (700)
  • n20 (800)
  • n28b (700)
  • n28a (700)
  • n38 (2600)
  • n77 (3700)
  • n78 (3500)
  • n1 (2100)
  • n3 (1800)
  • n5 (850)
  • n7 (2600)
  • n8 (900)
  • n20 (800)
  • n28b (700)
  • n28a (700)
  • n38 (2600)
  • n40 (2300)
  • n41 (2500)
  • n66 (1700)
  • n77 (3700)
  • n78 (3500)
4G LTE
  • B1 (2100)
  • B2 (1900)
  • B3 (1800)
  • B4 (1700/2100 AWS 1)
  • B5 (850)
  • B7 (2600)
  • B8 (900)
  • B12 (700)
  • B17 (700)
  • B18 (800)
  • B19 (800)
  • B20 (800)
  • B26 (850)
  • B28b (700)
  • B28a (700)
  • B34 (TDD 2100)
  • B38 (TDD 2600)
  • B39 (TDD 1900)
  • B40 (TDD 2300)
  • B41 (TDD 2500)
  • B42 (TDD 3500)
  • B1 (2100)
  • B2 (1900)
  • B3 (1800)
  • B4 (1700/2100 AWS 1)
  • B5 (850)
  • B7 (2600)
  • B8 (900)
  • B12 (700)
  • B13 (700)
  • B17 (700)
  • B18 (800)
  • B19 (800)
  • B20 (800)
  • B25 (1900+)
  • B26 (850)
  • B28b (700)
  • B28a (700)
  • B32 (1500)
  • B38 (TDD 2600)
  • B39 (TDD 1900)
  • B40 (TDD 2300)
  • B41 (TDD 2500)
  • B66 (1700/2100)
3G
  • B1 (2100)
  • B2 (1900)
  • B3 (1800)
  • B4 (1700/2100 AWS A-F)
  • B5 (850)
  • B6 (800)
  • B8 (900)
  • B19 (800)
  • B1 (2100)
  • B2 (1900)
  • B4 (1700/2100 AWS A-F)
  • B5 (850)
  • B8 (900)
2G
  • B2 (1900)
  • B3 (1800)
  • B5 (850)
  • B8 (900)
  • B2 (1900)
  • B3 (1800)
  • B5 (850)
  • B8 (900)

SIM card

Dual SIM Dual Sim Dual Standby Dual Sim Dual Standby
Type
  • Nano SIM
  • Nano SIM
  • Nano SIM
  • Nano SIM

Wi-Fi

Wi-Fi
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11n 5GHz
  • 802.11ac
  • WiFi 6 (802.11ax)
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11n 5GHz
  • 802.11ac
  • WiFi 6 (802.11ax)
Others
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Wi-Fi Display
  • Wi-Fi MiMO
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Wi-Fi Display

Bluetooth

Version Bluetooth 5.2 LE Low energy consumption Bluetooth 5.0 LE Low energy consumption
Others
  • AVRCP (Audio/Visual Remote Control Profile)
  • HID (Human Interface Profile)
  • LE (Low Energy)
  • OPP (Object Push Profile)
  • APT-x
  • LDAC
  • SBC
  • AAC
  • A2DP (Advanced Audio Distribution Profile)
  • AVRCP (Audio/Visual Remote Control Profile)
  • DIP (Device ID Profile)
  • HFP (Hands-Free Profile)
  • HID (Human Interface Profile)
  • HSP (Headset Profile)
  • LE (Low Energy)
  • MAP (Message Access Profile)
  • PAN (Personal Area Networking Profile)
  • OPP (Object Push Profile)
  • PBAP/PAB (Phone Book Access Profile)
  • ANT+
  • APT-x
  • SBC

Navigation

Navigation
  • GPS
  • A-GPS
  • GLONASS
  • Beidou
  • QZSS
  • Galileo
  • GPS (L1+L5)
  • GLONASS (L1)
  • BeiDou (B1)
  • Galileo (E1+E5a)
  • BeiDou (B2)
  • NavIC System
  • QZSS (L1 + L5)
  • GPS
  • A-GPS
  • GLONASS
  • Beidou
  • Galileo
  • GPS (L1+L5)
  • Galileo (E1+E5a)

USB

USB
  • Charging
  • Mass Storage
  • USB On-The-Go (OTG)
  • USB Type C
  • USB Host 3.0
  • Charging
  • Mass Storage
  • USB On-The-Go (OTG)
  • USB Type C

SAR

European measurement

The European Union sets a limit of 2 W/kg averaged over 10 grams of tissue.

-- 0.460 W/Kg on head
1.510 W/Kg on body
American measurement

The FCC limit is 1.6 W/kg measured in a volume of 1 gram of tissue

-- --

Others

Others
  • NFC
  • Audio Jack
  • Computer sync
  • OTA sync
  • Tethering.
  • DLNA
  • NFC
  • Computer sync
  • OTA sync
  • Tethering.
  • VoLTE
  • ANT+

User reviews

Does it have good coverage for calls?
--
9.0
Quality of the GPS
--
9.1
And the WiFi?
--
9.2
Number of reviews
--
23 reviews

Battery

Battery

Capacity
4000 mAh
4000 mAh
Type Li-Polymer Li-Polymer
Fast charge Yes,
30.0W
Yes,
25.0W
Others
  • Non-removable
  • Wireless charging
  • Reverse charging
  • Non-removable

User reviews

How long does the battery last?
--
  • 0%
    Less than half day
  • 48%
    Less than a day
  • 35%
    One day
  • 9%
    More than one day
  • 9%
    Two days or more
Number of reviews
--
23 reviews

Software

Software

Operating System
  • Android 11
    Android 11 Red Velvet Cake, 1 year ago
  • Android 11
    Android 11 Red Velvet Cake, 1 year ago
Google Services (official) Yes Yes

User reviews

Did it come with preinstalled applications?
--
  • 0%
    It comes with a clean operating system
  • 86%
    It has preinstalled apps but they don't bother me
  • 14%
    It has preinstalled apps that I can't uninstall
Do you regularly receive updates?
--
  • 0%
    Never
  • 0%
    Once a year
  • 29%
    Every six months
  • 71%
    Every two months or less
Number of reviews
--
23 reviews

Prices

Prices

Prices

Prices for the version Global  •  8GB  •  128GB  •  VA Change

Prices

Prices for the version Global  •  8GB  •  128GB  •  SM-G991B Change