Just noticed and have done a complete restore on 3 devices that 7.1 Beta 3 after a reboot disables Auto-Brightness and you have to turn it back on every time you restart your phone.
Confirmed on 2 iPhone 5's and 1 5s all experiencing the same behaviour (issue wasn't there in 7.1 Beta 2)
If anyone has a solution please share
Confirmed on 2 iPhone 5's and 1 5s all experiencing the same behaviour (issue wasn't there in 7.1 Beta 2)
If anyone has a solution please share