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Which Mobile Phone has the Longest Battery Life in 2021

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The characteristic that most often matters about mobiles today is their autonomy. All have improved in power, screen quality and other features, but many continue to come to the market with batteries that do not prevent them from having to be recharged every day if given enough use. However, among all the number of mobiles on the market, a few stand out in terms of battery.

Which mobile phones have the longest battery life in 2021?

The best tested models for battery life are the Motorola Moto G7 Power, Huawei P30 Pro, Nubia Red Magic 3, Samsung Galaxy M30S and the ASUS ROG phone II. These models are chosen based on their great autonomy, but it does not limit them to a specific range or price.

Some achieve that great battery life thanks to limiting the power of the processor or screen resolution and others by having first-line and very efficient screens and processors, but they all have in common high-capacity batteries.


There are many factors determining the battery life of a mobile and the most important is not exactly the maximum capacity of the battery. Although having a 5000 mAh battery is better than having a 2000 mAh battery, when you start to advance through the mid-high and high range there are other factors of interest.


Motorola Moto G7 Power

Motorola Moto G7 Power

The Moto G7 Power follows Motorola’s aesthetic line, with a product well compensated in terms of features. Its 6.2 inches IPS-type screen with a resolution of 1570 × 720 pixels plays in favor of its autonomy, since it includes a 5000 mAh battery. It also has a Snapdragon 632 processor manufactured at 12 nm as an efficient model, since the cores are also limited to 1.8 GHz, so they will perform well but do not consume excessively.


The camera of this mobile is a single 12 Megapixels, so it will not stand out in the photographic section, although it benefits from a good HDR mode. The photos you take have a good level of detail and exposure, with colors that change reasonably but are true to the scene.


The battery recharges with up to 15W, and a suitable TurboPower charger (QuickCharge 3.0) is provided to take advantage of it.

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Huawei P30 Pro

Huawei P30 Pro


The Huawei P30 Pro has a good autonomy thanks to its OLED screen and its 4200 mAh battery that is charged by an USB Type-C with up to 40 W, or 15 W with wireless Qi charging.


The screen is 6.47 inches with a resolution of 1080 × 2340 pixels, which integrates a fingerprint reader on the screen itself. They design it to be waterproof.


The processor used is the Kirin 980, which guarantees an amazing battery life because it does not consume too much.


It includes a rear camera with four sensors, and a front camera is 32 megapixels.

The battery recharges with up to 40 W or a 15 W wirelessly Qi, and a suitable Huawei SuperCharge that comes with it. 

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NUBIA Red Magic 3

The Red Magic 3 is a mobile more thought to play than for everyday use, but its 5000 mAh battery and OLED screen make it stand out in the field of battery life. That screen 6.65 inches with a resolution of 2340 × 1080 pixels, and a maximum brightness of 450 nits. This smartphone has autonomy for about fourteen hours of screen use browsing, or something else playing video.


The processor is a Snapdragon 855, with up to 12GB of RAM and up to 256GB of storage. To improve the cooling, it includes some heat pipes and a small fan to get the most out of the processor.


The rear camera is a single lens and uses the Sony IMX586 sensor which is 48 Megapixels allowing 8K video recording. The front camera remains at 16 Megapixels but still takes beautiful pictures.


The battery recharges with up to 18W, and a suitable Quick Charge 3.0 charger is provided to take advantage of it.

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Samsung Galaxy M30S


The Samsung Galaxy M30S is an excellent choice in terms of battery life, within the mid-range, starting with its Super-AMOLED screen, which is 6.4 inches and 1080 × 2340 pixels. Above all, it is for its 6000 mAh battery, although it recharges with 15 W fast charge, so it can take up to three hours to recharge fully it.

In return, you get up to 20 hours of video playback or over fifteen hours of browsing. Therefore, this device is the best in terms of battery life.


The processor is a good Exynos 9611 model, which will give it fluidity and it has 4 GB of RAM and 64 GB of UFS 2.1 storage, with a micro-SD card reader to expand your internal storage.


The camera is more modest, but good and interesting for where it moves. It has a good 48 Megapixels main sensor, a secondary 8 Megapixels wide angle, and a tertiary 5 Megapixels for depth. It takes good detail and good exposure in photos.


The battery recharges with up to 15W and they provide a suitable Samsung Adaptive Fast charger to enjoy fully your battery life.

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ASUS ROG Phone II

The ASUS ROG Phone II has a large 6000 mAh battery. It is a device designed to play; it counts with the AMOLED screen accompanied by a powerful and efficient Snapdragon 855 processor, with 12 GB of RAM and 128 GB of storage.


The battery is recharged by an USB 3.0 Type C port with 30W fast charge. It has autonomy for over 20 hours of playing videos and video games. In addition, it includes quality stereo front speakers.


The front camera is 25 Megapixels taking beautiful selfies, while the rear is triple, with a main sensor of 48 Megapixels, a secondary of 13 Megapixels with a wide angle of 125º, and a tertiary of 24 Megapixels.


All these amazing smartphones will grant you the best time while using them for lengthy sessions because its battery will last, because of their specifications and the effort of the manufacturers while planning this technology for you.


It is all up to you; decide which one of this high autonomy cellphones you would like to buy.

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