Smartphone battery life indicator.

To some smartphone users, battery life is the single most important factor in choosing a device. 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 increased capacity of batteries—3000mAh (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 ratings with the best battery life, our testers use a robotic finger that simulates what a person might do with a phone in the course of an average day. The robot browses the internet, takes pictures, uses the GPS navigation, and—of course—makes phone calls.

If you've looked at our ratings recently, you may have noticed that the battery-life figures have increased for a number of models. That’s because we no longer set the screen to maximum brightness before the test, which penalized models with displays that can reach super-bright—but battery-draining—levels.

Because consumers don’t always choose to set those screens at peak levels, we’ve decided to use a consistent brightness that more closely mirrors how we evaluate battery life for tablets.

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

All of the smartphones featured here are recommended by Consumer Reports, but they don’t all come from big-name brands or include the high-end features that a lot of consumers now take for granted. For many people, the trade-off will be worth it.

And no matter which phone you have, there are ways to extend the battery life. Here are tips from our test team.

Tips to Extend Battery Life

  • Set the screen brightness to Auto so that the device can adjust to indoor and outdoor conditions.
  • 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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Phones With Top-Rated Battery Life

For each of the 10 phones listed below, we've provided the Overall Score along with the score for battery life and the specs for the battery's capacity. The phones are ranked by the number of hours the batteries lasted in our testing, which is also noted.  

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Samsung Galaxy S10+

Price: $800

Battery life
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Samsung Galaxy S10 5G

Price: $1,300

Battery life
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Samsung Galaxy S10

Price: $700

Battery life
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LG V50 ThinQ 5G

Price: $1,150

Battery life
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OnePlus 6T

Price: $550

Battery life
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Samsung Galaxy S10e

Price: $550

Battery life
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Samsung Galaxy Note9

Price: $800

Battery life
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Apple iPhone XS Max

Price: $1,100

Battery life
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LG G8 ThinQ

Price: $650

Battery life
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Apple iPhone 8 Plus

Price: $700

Battery life
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Smartphone Battery Tips

Smartphones can be a lifeline but only when you keep them charged. On the "Consumer 101" TV show, Consumer Reports’ smartphone expert, Bree Fowler, shows how your device can stay powered up when you're out and about.