First I cannot update my version from JellyBean 4.2 to 4.3. Every time I had downloaded the update when the device restarts and it reaches 21% on the update it said's "Update Fail". What can I do?!
NOTE - (Someone told me that because I rooted the phone I cannot update my phone through AT&T servers)
Secondly my device from time to time restarts it self.
And sometimes the wifi stars connecting and disconnecting every few seconds.
Can anyone help me?