Asus Zenfone 8

Asus Zenfone 8
5.9″
1080 x 2400
(20:9 ratio)

6GB to 16GB RAM

128GB to 256GB

Dual
64MP+12MP
 Chipset
Qualcomm SM8350 Snapdragon 888 5G

4000 mAh
14.8 Wh

 ~94 h
 ~20 h
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Asus Zenfone 8 was released in 2021 and is powered by the Qualcomm SM8350 Snapdragon 888 5G chipset manufactured on a 5 nm process technology. It comes with 6GB to 16GB of RAM and 128GB to 256GB of storage. The battery capacity is 4000 mAh and the phone is 8.9 mm thick.

Asus Zenfone 8 Battery life

Asus Zenfone 8 battery life can vary significantly, ranging from 10 hours and 7 minutes to 94 hours, depending on how the phone is used. The following usage profiles are relevant:

1.  Active Standby: ~94 hours

3 days and 22 hours? Really? This profile prioritizes a phone that's always reliable, perfect for emergencies or extended trips. Keep in mind, standby time will take a significant hit when you actually use the phone. Active standby time of the Asus Zenfone 8 depends on using it wisely and avoiding battery-draining background apps.

2.  Light Usage Profile: ~43 hours

If you primarily use your phone for communication but have all the apps you need and use them whenever you need them, you can expect the Asus Zenfone 8 to last for approximately 43 hours. That means 1 day and 19 hours.

3.  Moderate Usage Profile: ~33 hours

If you're a fan of YouTube and social media but don't have all day for it, this profile is for you. In this scenario, you can expect the phone to last for approximately 33 hours. That means 1 day and 9 hours.

4.  Heavy Usage Profile: ~21 hours

If you have high communication needs and staying informed is crucial for you, you will likely use your phone heavily. In this scenario, you can expect a battery life of approximately 21 hours.

Within this category, there are three extreme subprofiles:

  • Continuous voice calls: ~20 hours.
  • Continuous video playback: ~13 hours and 48 minutes.
  • Continuous intense web activity: ~10 hours and 7 minutes.

It is important to note that these are just estimates, and actual battery life may vary depending on individual usage patterns and specific conditions.

Factors such as battery age, screen brightness, network signal strength, and background app activity can also impact battery life of Asus Zenfone 8 phone.

Basic specifications

General specifications
Release year 2021
Networks technology GSM / HSPA / LTE / 5G (2G+3G+4G+5G)
Size (mm) 148 x 68.5 x 8.9 mm
Size (in) 5.83 x 2.70 x 0.35 in
Weight 169 g
Software Android 11, upgradable to Android 13
Screen
Screen size 5.9 inches
Screen resolution 1080 x 2400 pixels (20:9 ratio)
Screen Type Super AMOLED, 120Hz
Performance
Chipset Qualcomm SM8350 Snapdragon 888 5G
Architecture Octa-core (1×2.84 GHz Cortex-X1 + 3×2.42 GHz Cortex-A78 + 4×1.80 GHz Cortex-A55)
GPU Adreno 660
Technology 5 nm process
Memory
Storage 128GB to 256GB
RAM 6GB to 16GB
Memory versions
  • 128GB storage, 6GB RAM
  • 128GB storage, 8GB RAM
  • 256GB storage, 8GB RAM
  • 256GB storage, 12GB RAM
  • 256GB storage, 16GB RAM
Card No
Multimedia & Connectivity
Main Camera Dual (64MP + 12MP)
Front Camera Single (12 MP)
Radio FM radio (version dependent)
NFC Yes
Positioning GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
USB USB Type-C 2.0, OTG
Jack 3.5mm Yes
Battery
Battery Type Non-removable Li-Po
Battery Capacity 4000 mAh
Battery Energy 14.8 Wh
Phone Power density 23.67 mAh/g weight
449.44 mAh/mm thickness
Charging 30W wired, PD3.0, 60% in 25 min, 100% in 80 min (advertised)
Reverse wired
Battery Life Stand-by time: ~94 h
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