The last thing you want is for your phone to run out of juice when you need it most.
Usually, a phone lasts a full work day with moderate use. But if you use it heavily, you'll need to recharge it more often. Batteries also lose steam over time, running down faster the longer you've owned the phone. The possibility of losing battery -- and therefore losing your communication hub -- is frightening and real.
If you feel your handset battery seems to be stuck in the '90s and doesn't last as long as you'd like, you're not alone. So if a long-life battery tops your list of smartphone needs, check out these top-scorers -- they lasted impressively long during our lab tests for continuous video playback on Airplane mode.
Editors' note: This post updates frequently. It was originally published October 31, 2011.
With its dual-camera setup that can take artsy "bokeh" shots and a Snapdragon 835 processor, the OnePlus 5 is a great value for its price. What's more is that its quick-charging battery lasted nearly 18 hours during our lab tests, despite having a lower capacity than last year's model..
With its two rear cameras and a 13-megapixel front-facing shooter, the ZenFone 3 zoom is made for photo-enthusiasts. But its robust battery is what's turning heads. At 5,000mAh, the battery lasted 19 hours and 50 minutes, so you won't have to juice up very frequently, even after a full day of picture-taking. Read the ZenFone 3 Zoom hands-on.
The Galaxy S8 Plus is a big phone that manages to make a 6.2-inch screen look graceful. It has every hardware and software advantage of the ultrasleek, curved Galaxy S8, including long battery life. During its lab test, it lasted a solid 18 hours of usage. Read the Galaxy S8 Plus review.
As the cheapest, most "midrange" phone of Lenovo's Motorola Moto Z series, we were stunned to see that the Moto Z Play not only had the longest battery life of the Z line, but of all the handsets we reviewed in 2016 and beyond. Clocking in a whopping 23 hours and 3 minutes, this handset is worth getting for the battery life alone (aside from the fact that it also works with useful modular accessories). Itscounterpart didn't do so shabby either, with a time of 16 hours and 32 minutes of video playback. .
With its 22-hour lab time, the Galaxy A7 is a midrange Samsung phone that looks just like the Galaxy S7. Sure, its Marshmallow OS is not the latest, and it's not water resistant like the S7, but if you're looking for a cheap midtier Android, this is a decent contender. Read the Galaxy A7 review.
The big-screen Mate 9 has an extremely powerful Kirin 960 octa-core processor and a nifty dual-camera setup that's great for artsy shots. Its robust 4,000mAh battery will also survive throughout the workday and then some. In our tests, it lasted 18 hours and 35 minutes easily..