How to save battery life on your Android phone - The Verge
If you find your Android device frequently running low on battery, follow these tips to help you monitor and extend the usage of your phone’s battery life.
Once upon a time, phones such as the original Motorola Droid had interchangeable batteries. You could keep an extra charged battery on hand and swap them out when needed. It was a lot more convenient and lightweight than dragging around a heavy battery pack, and it kept the phone going strong over the course of the busiest workday.
But as phone designs changed over the years, swappable batteries were abandoned by phone manufacturers to keep their phones sleeker and accommodate wraparound screens. Improved battery technology means that most phones will get you through at least a full day’s use — unless you are watching a lot of videos or your device is a year or two old.
If your phone is running out of gas before you go to bed, you’ve got a few options. You can buy a new phone (unless you still like your current phone or your budget is limited). You might also be able to have the battery replaced, depending on which phone you have.
Or, you can follow these tips to help you monitor and extend the usage of your battery. For this tutorial, we’ll be using a Samsung Galaxy Note 9 running Android 10, so your experience may differ depending on the phone and the version of Android you have.
Samsung devices come with a handy tool that automatically optimizes your battery usage. It closes any apps running in the background and checks to see if you’re running any apps that use up too much battery power.