If you go to Settings -> Battery on your iPhone, you can see a lot of stats about the performance and health of your battery. This includes a charge graph that plots the battery percentage of the ...

If you're using an older iPhone, you're all too familiar with the pop-up warning when your phone's battery drops below 20%.

A SPECIAL note from Apple reveals why your iPhone's battery life might suddenly seem so bad. It's a familiar problem: your iPhone is working just fine one day, and is struggling with charge the next.

In the past, running out of juice meant phones were almost entirely out of action, but a tech expert has revealed several iPhone tricks that work even with a dead battery.