Can't hang up call after screen blank
Related to #107 (closed) but filing as separate issue.
Problem
When making a call, if you hit the power button to blank the screen (to save power, disable risk of face hitting touch screen), if you unblank the screen you can no longer use the touch screen to hang up the call. Because of issue #107 (closed) the user also cannot unlock the screen, so they are forced to reboot.
Expected Behavior
User should be able to press the power button to blank the screen when in the middle of a call, then hit the power button to unblank and hang up the call.
Steps to Reproduce
- Make a call
- Hit power button to blank screen during call
- Hit power button to unblank screen
- Attempt to hang up call