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Smartphones with best battery life represented by a person whose battery is running low.

Smartphones With the Best Battery Life

These five devices are some of the best for all-day use

To some smartphone users, battery life is the single most important factor in choosing a phone. After all, the best smartphone in the world isn’t worth much if you need to recharge it every few hours.

The good news is that smartphone battery life has improved significantly in recent years, courtesy of the batteries' increased capacity—3,000 mAh (milliampere-hours) and higher—and processors and wireless connections that smartly adjust power consumption to suit the job at hand.

Remember, a large-capacity battery requires a large-capacity shell, so the smartphones featured here tend to be on the bigger side.

More on Smartphones

To identify the models in our smartphone ratings with the best battery life, our testers evaluate the batteries by using a robotic finger that simulates what a person might do with a phone throughout an average day—without taking a break. The robot browses the internet, takes pictures, uses the GPS navigation and, of course, makes phone calls.

The best battery life doesn’t automatically mean a great overall phone, so check our smartphone ratings and buying guide to find the model that suits your needs.

And keep in mind that while all of the smartphones featured here are recommended by Consumer Reports, some don’t come from big-name brands or include the high-end features that a lot of consumers now take for granted.

Tips to Extend Battery Life

• Set the screen brightness to Auto so that the device can adjust to indoor and outdoor conditions. (We test phones with the screens set to 100 percent brightness.)

• Lower the baseline brightness. In most phones, you can do this by using a sliding switch in the Display menu.

• Set the screen to go to sleep after 15 or 30 seconds of inactivity.

• Turn on airplane mode when you’re in a location with no WiFi or cellular data signal.

• Reduce the frequency of updates for email, social network feeds, and other apps to once every hour.

• If you’re streaming content over a WiFi network to stretch your data allowance (and doing other data-intensive tasks such as internet gaming), keep a power adapter handy. Our tests have found that performing tasks over WiFi can drain batteries significantly faster than using cellular-data connections.


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Smartphones in Our Ratings.
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