Several users have reported that the Slide to unlock feature either does not work / is unresponsive, or very slow to respond, making it impossible to slide to unlock the device. Several users have also stated that this issue started after updating their devices to iOS 6.
Below are some possible fixes. After trying each step, check to see if your issue has been resolved.
- Please check to make sure that you are running the latest version of iOS. To check the version you are running, simply tap Settings > General > Software Update and if there is an update, please update your device (see this article).
- Hard reset your device by pressing and holding the Sleep/Wake (on/off) button and the Home button together until the Apple logo appears (ignore the red slider).
- Does your screen have any debris or dirt on it? This can sometimes make your multi-touch screen stop functioning correctly (see this article). Try to clean your screen and try again.
- Restore from backup in iTunes by connecting your device to a computer. (Back up your device first, see this article)