Chosen Solution

instead of display eg: 13:26 it display 1E:Sd note E for 3 S for 5 d for 6

Is your iPhone jailbroken? If so it may have been something changed in you settings or winterboard. If not then make a backup, then restore from that. If it still doesn’t work to a regular restore, but make sure you back up your contacts with Gmail or some other service available in iTunes when you plug your iPhone in.