Don’t Wait to Charge Your iPhone Until the Last Second 

Most of us like to use our iPhones to the last possible minute. While this might seem like a good idea on paper, waiting until your iPhone dies —that is, goes down to 0% — is actually bad for your iPhone’s battery.

There’s a reason why your iPhone lets you know its battery is below the 20% mark. That’s the best possible time to plug in your iPhone and let it charge. 

While it’s true that your iPhone still has a bit of battery when it automatically turns off, it’s best to avoid that altogether. If you do it too often, you might damage the battery’s maximum capacity.