Samsung Galaxy S21 vs Asus Zenfone 8

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Main
Model
Price
Advantages

launch
Announced
Status
platform
OS
CPU
GPU
Chipset
camera
Rear
Front
Video
Features
display
Size
Resolution
Technology
Protection
battery
General
Charging
body
SIM card
Build
Weight
Dimensions
memory
Internal Storage & RAM
Card slot
comms
GPS
NFC
USB
WLAN
Radio
Bluetooth
features
Sensors
sound
3.5mm jack
network
Speed
2G bands
3G bands
4G bands
Technology
5G bands
Videos

Main
Model
Samsung Galaxy S21
Price
Advantages
DISPLAY Size: 6.2 inches, 94.1 cm2
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Main
Model
Asus Zenfone 8
Price
Advantages
BATTERY Charging: Fast charging 30W, 60% in 25 min, 100% in 80 min (advertised)
MEMORY Internal Storage & RAM: 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, 256GB 16GB RAM
COMMS Bluetooth: 5.2, A2DP, LE, aptX HD, aptX Adaptive
SOUND 3.5mm jack : Yes
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launch
Announced
Not announced yet
Status
—
platform
OS
Android 11, One UI 3.1
CPU
Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
GPU
Mali-G78 MP14 - International Adreno 660
Chipset
Exynos 2100 (5 nm) - International
camera
Rear
Tripple: 12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8Âµm, Dual Pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8Âµm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120Ë (ultrawide), 1/2.55" 1.4Âµm, Super Steady video
Front
10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22Âµm, Dual Pixel PDAF
Video
8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS
Features
LED flash, auto-HDR, panorama
display
Size
6.2 inches, 94.1 cm2
Resolution
1080 x 2400 pixels, 20:9 ratio (~421 ppi density)
Technology
Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)
Protection
Corning Gorilla Glass Victus
battery
General
Li-Ion 4000 mAh, non-removable
Charging
Fast charging 25W
body
SIM card
Single SIM
Build
Glass front (Gorilla Glass Victus), plastic back, aluminum frame
Weight
169 g (5.96 oz, 0.37 lb)
Dimensions
151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
memory
Internal Storage & RAM
128GB 8GB RAM, 256GB 8GB RAM
Card slot
No
comms
GPS
Yes, with A-GPS, GLONASS, BDS, GALILEO
NFC
Yes
USB
USB Type-C 3.2, USB On-The-Go
WLAN
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot
Radio
FM radio (Snapdragon model only; market/operator dependent)
Bluetooth
5.0, A2DP, LE
features
Sensors
—
sound
3.5mm jack
No
network
Speed
HSPA 42.2/5.76 Mbps, LTE-A (CA)
2G bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only) CDMA 800 / 1900 & TD-SCDMA
3G bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO
4G bands
LTE
Technology
GSM / CDMA / HSPA / EVDO / LTE
5G bands
—
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launch
Announced
2021, May 12
Status
Available. Released 2021, May 13
platform
OS
Android 11, ZenUI 8
CPU
Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680)
GPU
Adreno 660
Chipset
Qualcomm SM8350 Snapdragon 888 5G (5 nm)
camera
Rear
Dual: 64 MP, f/1.8, 26mm (wide), 1/1.73", 0.8Âµm, PDAF, OIS 12 MP, f/2.2, 112Ë, 14mm (ultrawide), 1/2.55", 1.4Âµm, dual pixel PDAF
Front
12 MP, f/2.5, 28mm (standard), 1/2.93", 1.22Âµm, dual pixel PDAF
Video
8K@24fps, 4K@30/60/120fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS, HDR
Features
LED flash, HDR, panorama
display
Size
5.9 inches, 84.0 cm2
Resolution
1080 x 2400 pixels, 20:9 ratio (~446 ppi density)
Technology
Super AMOLED, 120Hz, HDR10+, 700 nits (HBM), 1100 nits (peak)
Protection
Corning Gorilla Glass Victus
battery
General
Li-Po 4000 mAh, non-removable
Charging
Fast charging 30W, 60% in 25 min, 100% in 80 min (advertised)
body
SIM card
Dual SIM
Build
Glass front (Gorilla Glass Victus), glass back (Gorilla Glass 3), aluminum frame
Weight
169 g (5.96 oz, 0.37 lb)
Dimensions
148 x 68.5 x 8.9 mm (5.83 x 2.70 x 0.35 in)
memory
Internal Storage & RAM
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, 256GB 16GB RAM
Card slot
No
comms
GPS
Yes, with dual-band A-GPS, GLONASS, GALILEO, BDS, QZSS, NavIC
NFC
Yes
USB
USB Type-C 2.0, USB On-The-Go
WLAN
Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot
Radio
FM radio (market/region dependent)
Bluetooth
5.2, A2DP, LE, aptX HD, aptX Adaptive
features
Sensors
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
sound
3.5mm jack
Yes
network
Speed
—
2G bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 - International 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 30, 34, 38, 39, 40, 41, 42, 66, 71 - USA
Technology
—
5G bands
1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78 SA/NSA - International 1, 2, 3, 5, 7, 8, 12, 20, 25, 38, 40, 66, 71, 77, 78 SA/NSA - USA
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Summary

The Zenfone 8 model weight 169g that is 0g lighter than the weight of the Samsung Galaxy S21.

The Zenfone 8 is equipped with a 3.5mm jack that is the most easy way to connect earphones and listen music.

Considering the above-mentioned differences the Zenfone 8 will become the best choice. Check the lowest price on Amazon.