it's been awhile since i updated my galaxy s6 and it's been giving me issues that i had not encountered before. many times the camera would not take a shot. it would let me hit the screen to focus but shutter would not go off. about 5 times, phone would vibrate when i'm trying to take a picture. vibration seems like it's cause by the lens element since the screen under camera view comes out as though it's being shaken really bad and would not focus. only way to resolve it was to hit back, close out the camera program and re-enter the camera program. a few times the phone would reset by itself during this. also i just noticed that when i go into the setting->battery, only few android OS items would show and none of the apps are showing to drain the battery. i did not have any of these issues prior to this update. is there a way to revert back to the previous build?