I have the droid maxx, it's about 18 months old and I've never had a problem with the camera until the new update installed recently. Now I only have a front facing camera with no option to switch to the rear facing camera. I have tried uninstalling the update, clearing the data, clearing the cache, installing the Google Camera (which has the option for rear facing camera, but when I select it I get an error message that says "your device does not have a back facing camera), installing programs such as Snapchat that used the camera, etc. I've tried everything that I can find to try and nothing works. AND now I keep getting error messages for "Camera Busy - Camera unable to start. If this repeats please power off your phone and restart". Well, I've tried several restarts and that doesn't work either. Please help!