some issues i've noticed that are really annoying even after a factory reset after the update.
1. random lag on turning on tee display. sometimes it takes a noticeable amount of time for the display to turn on.
2. random non responsive capacitive buttons. when i turn on the display, the capacitive buttons are unresponsive, the only way to get them to work is to turn off then turn on the display again.
3. the most annoying issue of them all. failure to connect back to 3g/1x. when i'm on 4g and it looses the the 4g signal, the phone will refuse to connect back to 3g/1x, besides the loss of data connectivity, the phone signal is also lost meaning i can't receive or make calls. it has persisted from gingerbread to now. the only way to fix this is to reset the phone.
battery life is slightly worse but i'm used to it.