Screen flashes black for a split second, Android

A user is reporting to me that there screen flashes black occasionally. The app doesn’t crash, in fact it carries on running. It’s as if the renderer just stops running for a little bit. The game is touch input so the screen shouldn’t be timing out.
Any ideas what could be causing this?

  1. I’d make sure it is not the screen dimming, check the Sleep settings.

  2. Kind of hard if you can’t reproduce the flashing. If you can, try the profiler or the android log (adb logcat -s “Unity”) and take it from there.