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  • ViserMark

OPPO A57 - Battery Performance Score

Updated: Nov 4, 2022

Fast With The Right Features At The Right Price



Battery Capacity mAh: 5000

Smartphone Battery Performance Overall Score: 53/100

Ranking #16

Ranking #3


We have listed what you need to know about the OPPO A57


OPPO introduced the A57 in April 2022 (released in France in October 2022) it does not disappoint, being a serious contender in our Entry Tier (€0-€199) of smartphones. Battling well with other brands such as Motorola and Nokia, it offers all the features and functionality of smartphones placed within higher tiers, without being overpriced.

The OPPO A57 during our battery testing performed well and achieved a battery performance score of 53 out of 100. This score is based on daily life activities, providing a realistic Smartphone battery life review.

Overall, the OPPO A57 provides a good user experience, and its touchscreen allows you to switch from one application to another effortlessly. With an Octa-core processor with 4GB RAM, the speed based on the device usage can be adjusted and optimised for better battery consumption.

In the box, the smartphone comes with a USB-A to USB-C charging cable, a SIM ejector tool, a bumper case and a set of instructions. Despite having a 3.5 audio connector, unfortunately, no earbuds are supplied. The OPPO A57 is composed of glass and polycarbonate, is lightweight and has an ergonomic design, making it comfortable to hold and use.

Although the screen is a lower resolution, it offers an IPS LCD display which provides a wide range of colours. The main panel and settings allow you to change the brightness, and the OPPO A57 has OPPO AI Eye Comfort software function and "blue light reduction" technology.

Here’s a quick summary of the OPPO A57 for you:

Product - Good Points

· Impressive performing smartphone

· 33W super-fast charging

· Stereo speaker

· Long-lasting battery

· Water and dust IP-rated resistance

· Stylish design and premium feel

· Fingerprint technology

Product - Be Aware of Points

· Limited range of colours available - Glowing Green and Glowing Black

· 60Hz refresh rate

Smartphone Battery Performance Score

and Battery Results

We have designed and developed the ViserMark Battery Performance Labels

to help Smartphone users.

Our battery test results for the OPPO A57 have been translated

into the ViserMark Labels displayed below.


Let’s look at the review by ViserMark based on the results during testing.

You can find the full results of our battery performance testing below:

Smartphone Battery Performance Overall Score:

The Battery Performance Label shows a score between 0 and 100. It reflects the performance based on independent, repeatable, and rigorous testing.

Using various testing criteria, measured using real-life scenarios and live networks, results are collated with calculations from Battery Life, Power Efficiency and Charging results that amount to the total score.

The OPPO A57 was positioned in the Entry Tier (€0-€199) based on price. With a score of 53 out of 100 obtained for battery performance, it matched exactly the Apple iPhone 13 Pro within the Flagship/Pro (€700 +) as well as the Honor 50 placed in the Mid Tier (€200-€499).

Leading the Entry Tier (€0-€199) are the Realme 7i and Wiko Power U20, both having respectable battery performance scores of 62 out of 100. Just behind is the OPPO A57 having a score of 53 out of 100, with the Nokia G10 and Motorola Moto G30 following slightly behind, with scores of 50 out of 100.

Comparison of SmartPhones in the Entry Tier

These 3 smartphones sit at the top half of the rankings within this tier and all have a battery capacity of 5000mAh, therefore our testing results show similar battery performance.

More Battery Performance Scores can be viewed in the Entry Tier Ranking table.


Battery Life

Battery Life - How long will this Smartphone battery last?

This is expressed in “Days-of-Use” and reflects the time in days that a smartphone can be used from a full charge.

Looking into the battery performance results in further detail, in the graph below it is clear to see the results for Battery Life ratings. From a fully charged battery, the comparative smartphones provide between 2 days to 2.5 days of battery life when being used for general daily usage.

Comparison of SmartPhones in the Entry Tier

Despite all smartphones having a long-lasting battery of 5000mAh, both the Nokia G10 and Motorola Moto G30 perform slightly better, gaining an extra half a day over the OPPO A57.

These longer-lasting smartphones take up positions within the Top Ten for Best Battery Life Scores.

See what other smartphones made it into the Top Ten, view the Days of Usage table


Charging Times

Battery Charging Time - How long will this Smartphone take to charge?

Time varies to charge different types and sizes of Smartphone batteries. This is expressed in Hours and Minutes.

We test the charging times of every device as part of our testing protocol and were impressed with the OPPO A57 delivering a fast charge in just 1 hour and 9 minutes. This means the charging time for the OPPO A57 is significantly faster than both the Nokia G10 and Motorola G30. The charging times are presented below.

Comparison of SmartPhones in the Entry Tier

OPPO invented and introduced fast charging with VOOC, and therefore uses this advanced technology to create incredibly efficient and fast-charging smartphones. This solution offers a significant competitive advantage when comparing charging times of similar smartphones within the Entry Tier. Often the charging times are at least doubled, as demonstrated in the chart above. Even in the higher tiers, smartphones still can not match up to such fast charging times.

More Charging Times can be viewed in the Charging Times table


Power Efficiency

Power Efficiency - How power efficient is this Smartphone?

Maximising the smartphone performance while reducing the amount of energy it consumes, with minimal impact on battery life.

It 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.

As expected, there is a slight difference in power efficiency results as shown here. The Nokia G10 and Motorola Moto G30 performed equally achieving a rating of 2, although the OPPO A57 slipped to a rating of 1.5 out of 5.

Comparison of SmartPhones in the Entry Tier

The most battery-efficient smartphones will provide good battery life and reduce the number of times the battery will need to be charged which harms its longevity. As you will appreciate all three manufacturers have dedicated research and development into implementing better battery life autonomy for their devices.

More Power Efficiency Scores can be viewed in the Power Efficiency table


Should I buy it?

The OPPO A57 offers strong performance and delivers all the features and functionality required for a smartphone. Being impressively fast at charging, with long battery life and affordable (around 200), it may be a perfect choice for many people. Although there may be some limitations, they definitely do not overweigh all the positivity around this phone as it offers excellent value for the price.


Extra Insights

Q: Does the OPPO A57 support 5G?

A: No, it does not on this model

Q: Does the OPPO A57 have a headphone jack?

Q: Does the Oppo A57 support wireless charging?

Q: Does the OPPO A57 have dual-SIM capabilities?

Q: Does the OPPO A57 have stereo speakers?

Q: Does the OPPO A57 have a microSD card slot?

Q: Is the OPPO A57 VoLTE enabled?


Product Features and Specification

Release Date October 2022 (in France)


6.56 inch IPS LCD 720 x 1612


MediaTek Dimensity 810 Android 12, Octa-core

Memory & Storage



Glass Front, Plastic Frame

Main Camera

​13MP & 2MP

Front Camera




33W fast charging


Stereo Speaker with a headphone jack

Dimensions and Weight

163.8 x 75.1 x 8.3mm and 186g

Colours Available

Glowing Green, Glowing Black


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)

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.

No VCX reviews are available for this smartphone.


See Another Review



OPPO is part of and owned by, BBK Electronics, a major Chinese consumer electronics firm. Launched by CEO Cheng Mingyong in 2004, OPPO became China's largest smartphone manufacturer in a mere 12 years. By 2016, the brand could be found everywhere, with OPPO phones being sold in over 400,000 retail outlets across the nation.


Latest Reviews

If you're looking for the best smartphone on the market, battery performance is one of the key decisive aspects to consider. ViserMark offers labels that measure battery performance, translating mAh into direct battery life scores, days of usage, charging times and power efficiency.

It is also a highly valuable marketing asset to device manufacturers and end-users.

ViserMark offers a useful benchmark to help make better-informed choices when buying a Smartphone. 


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