Freeze battery-draining apps without rooting your Android phone

Back in the early days of Android, it was common to root your phone so you could “hibernate” or “freeze” battery-killing apps. They wouldn’t be able to wake up the device’s CPU or consume any system resources. These days, Android has built-in features to stop battery-leeching apps, but you can still freeze apps, and you don’t even need root access to do it anymore.