The iPhone learns how often you charge it, and when it anticipates you'll have your phone plugged in for a while, it turns on Optimized Battery Charging. You may be wondering if it’s safe to ...

When the amount of charge the battery can hold diminishes ... going the Apple route, as you won’t void your device’s warranty ...

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 ...

That way you won't be draining battery if you put your phone down and paying attention to something else. Whenever you dip below 20% battery, your iPhone will ask if you want to extend your ...

Low battery health ... lasts on a single charge, but your battery health determines how much your battery life has diminished over time. After a year, your battery life won't be as long as when ...

If you store your iPhone for a long time, it may be in a low-battery state, which just means you may need to charge it for 20 minutes before it turns on. For more, check out the top settings in ...