How to Leave the Display on in an iPhone

Your iPhone turns off its display to conserve battery life and to prevent accidental use. However, there are times when you need your iPhone to remain on for an extended period of time to keep up with you. Instead of reawakening your iPhone every one to five minutes, tweak the settings to leave your iPhone's display on until you manually lock it.

Step

Tap “Settings” on your home screen.

Step

Tap “General” and then “Auto-Lock”.

Step

Select “Never” at the bottom of the list.

Step

Press the "Home" button to return to your home screen.