Person holding up a phone which displays a depleted battery on the screen

Mobile Phones with the Best Battery Life

Over the course of our life, we will spend around 34 years staring at our screens, with an average of two and a half hours on our smartphones every day. With so much time dedicated to browsing the internet, listening to music, watching films, and using apps, we need a phone with a long battery life. 

Whether you’re at home or travelling, it can be frustrating to keep plugging your phone in every few hours when the battery drains. Though you can carry  portable chargers with you, it would be more useful to have a smartphone with a battery that can withstand a whole day (or two!) of usage. So if you’ve been struggling, we’ve put together a list of the mobile phones with the best battery life.

How is battery life measured?

Before we delve into the best phones with the longest battery life, it’s helpful to know exactly how battery life is measured in electronic devices. 

The longevity of a battery, removable or non-removable, is measured in mAh (milliamp hour). The higher the mAh, the more power the battery can hold, and the longer it can last before needing to be recharged. 

There are many features which can alter this longevity, such as the use of 4G or having 5G turned on in Settings, playing or streaming videos and music for long periods of time, having the screen’s brightness on high, using FaceTime and other video apps that require the use of visuals and audio, and how old the phone is to begin with. 

Battery capacity will decrease the longer you have your phone, so older phones tend to die more quickly than newer phones. 

Which smartphone has the best battery life?

Regardless of which brand you’re loyal to, the following manufacturers have released game-changing batteries in their smartphones, so you no longer have to worry about running to a plug socket or carrying wires with you. 

But if you just want the best phone out there for battery capacity, then we recommend you go with the Samsung Galaxy M51, which features a whopping 7,000mAh battery! Of course, even a phone with the best battery life will still need topping up eventually. Check out our ultimate guide to charging your phone.

There’s plenty more choice than just the M51 - use the navigation below to explore your favourite brands and what they have to offer:

Apple phones with the best battery life


Battery capacity


iPhone 11 Pro Max


Released in Autumn 2019, the iPhone 11 Pro Max boasts the largest battery capacity of any iPhone to date

iPhone 12 Pro Max


Released just last year at the end of 2020, the 12 Pro Max is the largest iPhone

iPhone XS Max


From 2017, the XS Max is the largest of the iPhone 10 family

iPhone 11


The original 11 is the slightly smaller version of the 11 Pro Max

iPhone XR


The iPhone XR is the cheapest of the 10 range

iPhone 12 Pro


The model below the Pro Max in the newest 12 range released in 2020

If you're interested in an iPhone, check out our blog on the best iPhone for you.

Samsung phones with the best battery life


Battery capacity


Samsung Galaxy M51


Released in Autumn 2020, the M51 is a mid-range price smartphone with a whopping battery life

Samsung Galaxy S20 Ultra


Launched in Spring of 2020, the S20 Ultra boasts a huge battery capacity 

Samsung Galaxy S20 FE


Also released last year, the S20 FE has a big battery life. Other models with the same capacity include the Samsung Galaxy A71 and the Samsung Galaxy Note 20 Ultra

Samsung Galaxy Note 10+


This 2019 device has one of the biggest screens in the Samsung family

Samsung Galaxy A20


This Spring 2019 release boasts a useful battery capacity; the same as the Samsung Galaxy A51

If you’re interested in a Samsung smartphone, check out some of our recommendations

Huawei phones with the best battery life


Battery capacity


Huawei Honor X10 Max


This July 2020 release contains one of Huawei’s biggest batteries

Huawei Mate XS


This tablet-size smartphone has a huge 8-inch screen and was released in February 2020

Huawei Mate40 Pro


Released at the end of last year, this relatively new smartphone has a great capacity

Huawei P30 Pro and P40 Pro


Both of these models share the same battery capacity, with just 0.11 inches between them in screen size (6.47 and 6.58, respectively)

Huawei P40 Lite 5G


Its battery life may be a bit smaller, but it does have the advantage of being 5G-enabled

If you’re interested in a Huawei phone, here are our top recommendations.

Xiaomi phones with the best battery life


Battery capacity


Mi Max 3


This summer 2018 smartphone is older than most on this list, but features a huge 6.9 inch display

Mi Note 10 Pro


Released in November 2019

Redmi Note 9 and 9 Pro


The Note 9 and its upgraded sibling, the 9 Pro, were released in summer 2020, so are fairly new additions to the Xiaomi family

Mi 10T Pro 5G


This late 2020 model is the newest release from Xiaomi, and their most impressive to date. It is incredibly affordable for the features it has

Xiaomi Mi 10


Released in February 2020, the Mi 10 is only slightly smaller than the others

For more Xiaomi phones, we have a whole guide dedicated to the best.

Google phones with the best battery life


Battery capacity


Google Pixel 5


The newest Google phone is the Pixel 5, released in September 2020. It has a flexible display and its battery capacity is the biggest in a Google phone to date

GooglePixel 4a with 5G


Hopping on the 5G bandwagon is this 2020 release

Google Pixel 4XL


Though this belongs to the same Pixel 4 range as above, the 4XL was released in 2019 alongside the Pixel 3 family

Google Pixel 3a XL


The bigger phone of the two in the Pixel 3 range from 2019, at 6 inches, is the 3a XL

Check out some other Google models if you're a fan of this Android device.

Alcatel phones with the best battery life


Battery capacity


Alcatel 3X (2020)


The 2020 model of the 3X is a revised version of the 2019 release of the same name. It’s the best Alcatel on the market currently

Alcatel 1S


This 2020 model isn’t far behind the 3X, in terms of its battery. These Alcatel models are new, but extremely cheap, so make for good budget-friendly options

Alcatel 3L


Launched at the beginning of last year

Alcatel 3C


This 2018 model is older than the others, but is offered at a good price with a battery that is still more powerful than some brands

See which Alcatel phone is right for you in our guide.

Sony phones with the best battery life


Battery capacity


Various Xperia models


Sony have a whole host of models with a 4,000mAh battery: Xperia 1II, Xperia 5II, Xperia Pro, Xperia 10II, XPeria L4, Xperia XA2 Ultra, Xperia XA2 Plus, and more

Xperia XA2 Ultra


This January 2018 model has a battery life that’s not too far below the range of other Xperia models

Xperia XZ3 


Another 2018 model


Motorola phones with the best battery life


Battery capacity


Moto G9 Power


The Moto G Power range has some of the largest battery capacities among many manufacturers, and the newest launch, the G9 Power, has the biggest battery of them all

Moto G8 Power


Released a few months earlier than the G9 in 2020

Moto G7 Power


Launched a year earlier than the above two, this 2019 model shares the same battery capacity

Motorola Edge Plus


The Edge Plus came out in May 2020

Motorola Edge


The original of the Edge Plus isn’t too far behind its successor when it comes to battery capacity

Moto E5


This 2018 model is the oldest on the list, but still boasts a decent 4,000mAhbattery


OnePlus phones with the best battery life 


Battery capacity


OnePlus 8 Pro


Launched in April 2020

OnePlus 8


Only slightly behind the Pro when it comes to capacity

OnePlus 7 Pro


Released a year prior, this 2019 model is offered at a cheaper price than some comparable brands


Oppo phones with the best battery life


Battery capacity


Oppo A5


Launched at the tail end of 2019, the A5 from lesser-known brand Oppo can still rival many of the bigger brands on this list

Oppo A9


The A9 from last year offers a capacity just slightly below its predecessor from 2019

Oppo Reno4


Launched at the end of 2020

Oppo Reno4 Z


From the same family, the Reno4 Z showcases that this brand won’t be left behind in the big battery market


And there you have it - no matter which smartphone manufacturer you want to go with next, all of them have some big batteries to boast in their phones. Why not take things even further and check out the best portable chargers you can get in 2021 - your phone will never die on you again!

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