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  • Debbie Bouffler

Apple iPhone 12 - Smartphone Battery Performance

Updated: May 7


Battery Capacity mAh: 2815

Everything You Need to Know About the Apple iPhone 12's Battery Performance Score

Apple iPhone 12 smartphone

Smartphone Battery Performance: Ranking #8

In the Top 10 for Battery Performance within the


Battery Life Testing Report – February 2021

ViserMark Battery Performance Score 57/100


As expected with Apple devices, the iPhone 12 is the evolved version of the iPhone 11. With an OLED display of higher resolution than its predecessor, the iPhone 12 has 4GB of RAM and 64/128/256 GB of storage and supports 5G connectivity. A Pro version is also available in the market.


Release Date: October 2020

Product Features and Specification

  • Design: Similar to the old 4 and 5 series

  • Main Camera:

12 MP, f/1.6 26 mm (Wide-angle), OIS, Dual Pixel AF

12 MP, f/2.4, 13 mm (Ultra wide-angle), 120-degree field of view

Video: 4k Dolby vision; 2160p@30/60fps; 1080p@30/60/120/240fps

  • Selfie Camera: Dual camera12 MP, f/2.2, 23 mm HDR mode + 3d TOF camera

  • Battery: 2815 mAh (20W fast charge), 15Qi wireless charging.

  • Display: 6.1"

  • Size: 146.7 x 71.5 x 7.4 mm

  • Weight: 164g

  • Memory: 64/128/256GB RAM: 4GB

  • Chipset: Apple A14 Bionic chip (5nm) - Hexa-core (2x3.1 GHz Firestorm + 4x1.8 GHz Icestorm with 3.1GHz Turbo boost) Apple CPU, four-core Apple GPU, 16-core Apple NPU 4-gen

  • Software Version: 14.2.1


Battery Performance


The Apple iPhone 12 is a flagship-tier device (Over 700 euros) in the ViserMark ranking. The Apple A14 Bionic guarantees the device performance and the latest chipset from the mark, providing 5G connectivity while offering a reliable and fluid user experience.

The Apple iPhone 12 test results gave this Smartphone a ViserMark Battery Performance Score of 57. The iPhone 12 has a 2815 mAh capacity battery, much lower than most other brands, and a 20W fast charge system with a wireless charge option.


Testing Results

ViserMark Label for Battery Life with 2 Days of Use

BATTERY LIFE - Days of Use

Through the ViserMark testing protocol, the Apple iPhone 12 battery lasted almost 49 hours.

This Smartphone obtained a Battery Life score of 2 Days of Use.

The average ViserMark Battery Life score of a Flagship/Pro Tier Smartphone is 1.6 Days of Use. Being ranked 36th in the Day of Usage rankings, this score places the Apple iPhone 12 slightly above average within its tier.

ViserMark Label for Battery Charging with 1h31

CHARGING TIME - Hours and Minutes

To reach the full 100%, the Charging Time was 1 hour and 31 minutes. The average Charging Time is 1:11 for a Smartphone within the ViserMark Flagship/Pro Tier.

Battery Charging Icon

  • Best Smartphone for Charging Times: Ranking #27


ViserMark Label for Battery Efficiency with 3/5 leaves

Several power-efficient smartphone processors can cope with the growing number of new applications and 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 the least and 5 being the most power-efficient.

Apple iPhone 12 achieved an overall Power Efficiency Score of 3.0

  • Best Smartphone for Power Efficiency: Ranking #3



The Apple iPhone 12 battery performance is one the best we have tested in terms of efficiency, offering 2 days of autonomy with a 2800mAh battery. The Apple device has battery life similar to other devices equipped with 4000mAh batteries like the Xiaomi Mi 9T Pro, Huawei P40 Pro, and the Oppo Renno 4.


ViserMark tests are performed with the strictest protocol in a controlled environment to ensure repetition and consistency. They are 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.

Apple iPhone 12 Smartphone specifications

VCX (Valued Camera eXperience) - not available at present

The VCX Forum has been working with its members on the system and infrastructure as a non-profit organisation. We strive to improve our technology to develop and exchange accurate and objective quality and performance indicators that are our ultimate goal. We will also serve as a compass for the smartphone camera industry. We appreciate your interest in VCX-Forum.


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Apple Inc., an American multinational technology company headquartered in Cupertino, California, designs, develops and sells consumer electronics, computer software, and online services. It is considered one of the Big Five companies in the U.S. information technology industry, along with Amazon, Google, Microsoft, and Facebook.


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If you're looking for the best smartphone on the market, battery performance is one of the critical, decisive aspects, and ViserMark is for you.

Not only is ViserMark the first label that measures battery performance, translating mAh into direct battery life scores, but it is also a precious marketing asset to device manufacturers and end-users. ViserMark is a benchmark to help make better-informed choices when buying a Smartphone. 

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