iOS Keyboard over Network Alert
Got this buggy screen, when i asked Siri to Post to Facebook and tapped on the Edit buton to compose my message, which eventually brought up the keyboard just after sending an SMS through my cellular Network, which brings up an Alert screen with a single "Dismiss" button at the bottom. So, the Alert's "Dimiss" button got hidden by keyboard in this use case and i was finally unable to access my device. Neither tapping on home button worked nor tapping on the power button worked. Finally, i had to Restart the device for further usage.