iPhone can no longer be unlocked - what to do?

If your iPhone can no longer be unlocked, there are several ways to solve the problem. In this practical tip we will show you what you can do.

Problem: iPhone can no longer be unlocked

1. Make sure your iPhone is sufficiently charged and, if necessary, connect it to the charger.
2. Hold down the home button and the lock button until the Apple logo appears on the display. In many cases, the subsequent restart will fix the problem.
3. If the restart didn't fix the problem, you can restore your iPhone. Note: This will delete all files and folders - you should sync your iPhone with iTunes beforehand to keep your settings. Then connect your iPhone to the PC and start iTunes. In the left column, select your device under "Devices" and select the "Restore" option in the "Overview" tab.
4. To avoid this error in the future, switch to iPhone settings if the input works again. Then switch to the "Reset" option under "General". Finally, reset the "keyboard dictionary" here. It is known that this is the cause of the error in iOS 7.1.
5. A software update can also help you. To do this, connect your iPhone to the PC and start iTunes. In the overview area, click on "Check for update". This searches for the latest software and then installs it.
6. If all previous solutions have not helped you, there may be a hardware defect. In this case, only a repair helps. We present various providers of iPhone repairs in this practical tip.

This practical tip is based on iOS 6 or 7. We will show you how to unlock your iPhone as a Telekom customer in another practical tip.