Android 4.3

[David Chen Poh Seng]

I just upgraded my Samsung S4 I9505 to android 4.3. I having quite a lot of issue. My ringtone never change, always use system ringtone. Same goes to Notification. I found out my phone always hang for few seconds, the screen stuck.This all happen after i upgraded

 

[B. Diddy]

After a system update, it's often a good idea to clear the system cache partition, since some of the temporary system data that builds up there can slow the system down. Follow the instructions in this link for "Wipe Cache Partition." Reset: Samsung Galaxy S 4 | T-Mobile Support