In rare cases, the camera does not detect the built-in LED lights. To solve the issue, do the following:
- Tap on the standard Android home button on the right hand side of your screen. To exit the Camera App.
- Tap and hold the Android home button once more, untill a series of small app windows appear.
- Swipe up all the open app windows, so the open apps quit.
- Tap again on the standard Android home button
- Start the Camera App again by tapping 'start' on the home screen.
- The lights should start working now.
If, in rare cases, this fix does not work: turn off the studio entirely and turn it on again after 10 seconds.