5c screen freezes after 30 secs and have to lock/unlock phone to gain 30seconds more use

Hey Fostermac86,

From your post it sounds like your phone is becoming unresponsive only 30 seconds after you unlock it. I would quit all the running apps on the phone first. You may need to lock and unlock it a couple of times to get everything closed:

iOS: Force an app to close

Double-click the Home button.

Swipe left or right until you have located the app you wish to close.

Swipe the app up to close it.

When you have done that restart the device and test the issue again:

iOS: Turning off and on (restarting) and resetting

If the issue persists, backup your device to iTunes, then restore it as new and verify that it works.

How to erase your iOS device and then set it up as a new device or restore it from backups

If it does, then restore your backup to either verify it still works and the software just needed reinstalled, or isolate the issue to the backup file itself.

Thank you for using Apple Support Communities.

Regards,

Sterling