Open Radar

 
Summary:
A bug where the iPhone will present a black screen with just the battery life and and network provider. This bug occurs when the user is using the camera by swiping upwards on the lock screen and then receiving a phone call whilst on the camera viewfinder.

After the phone call ends the phone returns to a black screen as opposed to the camera. Sleeping/Waking the phone has no effect as well as pressing the home button. 

The only way I could escape this screen was to use siri to open the maps app and then press the home button.

Steps to Reproduce:

1. Press iPhone Sleep/Wake button
2. Slide up lock screen on Camera Icon to activate Camera
3. Have somebody call the iPhone
4. Answer the call
5. Hang up the phone call
6. See black screen.

Expected Results:

Return to camera view on home screen

Actual Results:

Black screen is displayed that is very difficult to get out of

Regression:

Problem always occurs on iOS 6.1 on iPhone 5. Unable to test on other iOS Devices currently.

Notes:

Use siri to open an app such as maps to escape the black screen