It’s a familiar scenario — you’re looking at something on your iPhone and, all of a sudden, the screen turns to black and you have to interact with the handset to see what you were doing again. If ...

Consider these expert-vetted tips and tricks to make your device last up to hours longer - no matter the brand.

Scrolling and streaming suck plenty of power on today's Android phones. Here's how to squeeze the most juice out of your battery, including a new option to monitor battery-hungry apps.