When I open my camera, the white camera icon appears with a black screen behind it. It immediately closes and goes back to my home screen. When I try using my camera through another photo app, I get a message that says "The camera hardware is not responding. The camera driver may have crashed, and may need rebooted." How do I reboot the driver? I have restarted my phone, removed my battery, cleared the camera data, uninstalled all other photo related apps, hard reset... My camera still does the exact same thing. It did this once before about a month ago, but it was fixed by soft reset. What can I do?