QUOTE(Japp @ Aug 26 2011, 05:05 PM)
geezzz , out of sudden standby time = usage time. I tried to solve this problem by choosing "Reset all settings" and the problem will temporary solve, but the problem will be back after 2 days , not sure i already reset my phone for how many times d , maybe more than 100times, do let me know if there is any better solution, Thanks.
QUOTE
1st. Turn off WiFi.
2nd. Turn on everything on cellular data (3G, Cellular Data, Data Roaming)
3rd. Wait until iPhone gets 3G signal, after it wait ~5mins
4th. Turn off 3G (DO NOT connect to any Wi-Fi networks before this is done), DO NOT turn off cellular data and data roaming.
5th. Turn on Wi-Fi. Connect to Wi-Fi if available.
This is the final solution for me! It works 100%2nd. Turn on everything on cellular data (3G, Cellular Data, Data Roaming)
3rd. Wait until iPhone gets 3G signal, after it wait ~5mins
4th. Turn off 3G (DO NOT connect to any Wi-Fi networks before this is done), DO NOT turn off cellular data and data roaming.
5th. Turn on Wi-Fi. Connect to Wi-Fi if available.
Sep 9 2011, 03:05 AM

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