How to Supercharge your iPhone in 5 Minutes

2. Step 3 – Leave your phone alone while you charge it

This might sound obvious, but once you put your iPhone at a charge, don’t use it. Turning on the display will use up more battery power and slow down the charge. While using your phone while charging won’t damage the battery, it will definitely take you longer to charge it. If you do this, your phone will charge twice as much in the same time period.