• Daniel Chaparro

Asus ZenFone 7 - Battery Performance Score

Updated: Jul 14


Battery Capacity mAh: 5000

Smartphone Battery Performance: Ranking #57

In the lower half for Battery Performance within the

High Tier Ranking Table

Battery Performance Testing and Review - January 2021


The Asus ZenFone 7 stands out with its flip camera (three high-quality cameras) that gives clear and colourful shots in both the front and rear captures.

Together with a high-capacity battery and a pin-sharp AMOLED display, the ZenFone 7 is the evolved version of ZenFone 6.

Release Date: August 2020

Product Features and Specification

  • Design: Futuristic new colours and patterns, mix between art and technology.

  • Camera: Flipping 3 in 1 camera, 64 MP Flip Camera/1.8 EIS (IMX686); 12 MP ultrawide 113º; 8 MP tel camera x3Flash LED dual. Video 8K@30FPS, 4K@60FPS

  • Battery: 5000 mAh (30W fast charge PD 3.0)

  • Display: 6.67"

  • Size: 165.08 x 77.28 x 9.6 mm

  • Weight: 230g

  • Memory: 128GB RAM: 6/8GB

  • Chipset: 5G X55

  • Android 10 with ZenUI 7

  • Software Version: QKQ1.200127. release-keys

Battery Performance


The Asus ZenFone 7 is classed as a High Tier Smartphone (between 500-699 EURO). It is armed with a Qualcomm Snapdragon 865 5G mobile platform. Asus has left behind the IPS display and has bet for a 90Hz full HD OLED display in the ZenFone 7 model. Like the 6 models, the ZenFone 7 is powered by a 5000 mAh battery with a 30W fast charge technology and comes with a homemade customized Android version, the Android 10 ZenUI 7.

The overall Battery Performance Score is now a global score taking calculations from Battery Life, Power Efficiency and Charging Times.

From the Asus ZenFone 7 test results, we have given this Smartphone a ViserMark Battery Performance score of 44. The Battery Performance Label being further from 100 indicates that this is not one of the best-performing phones. It has been ranked in 57th place of the best Battery Performance Smartphones as tested by SmartViser.

Testing Results

BATTERY LIFE - Days of Use

Through the ViserMark test protocol, the Asus ZenFone 7 battery almost lasted 40 hours, obtaining a Battery Life Score of 1.5 Days of Use.

The average ViserMark Battery Life score of High Tier Smartphones is 1.7 Days of Use. This means that this Battery Life is performing below average, placing the Asus ZenFone 7 lower on the ViserMark Battery Life autonomy ranking.

Test Graphics

Our testing is based on real smartphone usage from 100% battery level down to Power Off. When testing Smartphones, the testing protocol includes common daily life activities, for instance: Calls, Web, Video and Music streaming, Gaming, Social networks, Picture & Video capture and standby.

All testing is performed under strictly controlled test conditions with all activities being executed in a defined order and timeline.

Figure 1. Battery test at 90 Hz

Huawei P Smart 2021 Test Graphics

There are a number of power-efficient processors, within today's Smartphones, that are able to cope with the growing number of new applications and can support high-resolution displays without compromising battery life.

Power Efficiency is calculated using Battery Life and Battery Capacity. This is expressed in “Leaves" and reflects a rating between 1 being least and 5 being the most power-efficient.

The Asus ZenFone 7 achieved an overall Power Efficiency Score of 1

  • Smartphone for Power Efficiency: Ranking #77


To conclude, the Asus ZenFone 7 Battery Performance Score achieved was 44 which is lower than most High Tier devices. Its Battery Performance Score is less than expected if we consider its battery capacity and Asus promoted autonomy of two days. Nevertheless, the device is equipped with the latest chipset and a mechanic system to have a top-quality camera.

The Asus ZenFone 7 has the same Battery Performance Score as the Samsung Galaxy Note 20 (44) and the Vivo X51 (47) and performs better than the Motorola Moto Edge. But it is behind some of their main competitors’ Smartphones such as the Oppo Find X2 Neo (47), and the OnePlus 8T (51).

ViserMark tests are performed with the strictest protocol in a controlled environment to ensure repetition and consistency powered and automated by SmartViser’s test automation solution viSer. The automation test includes a variety of user actions from calls to social media and periods of standby times.

VCX (Valued Camera eXperience)