If you need your phone to last just a little longer than normal, it's a good idea to turn on low power mode or battery saver mode. This essentially limits background activity, reduces the screen's ...

The study, which polled 2,000 US adults, found that this worry threshold hits well before the phone battery icon even turns red — a visual warning triggered when the charge drops below 20 percent.

Want to check your Bluetooth headphones’ battery on iPhone? Here’s how to see the battery level—whether you're using AirPods or another brand.