Tried 3G/4G toggle using test menu. Now phone is stuck in 3G and I cannot return to test mode with #*##4636#*# - the entry just 'sits' on the phone keypad and nothing happens. Anyone out there experienced this? Help appreciated.
Hi, New to Android. Concerned about battery life on Thunderbolt. Entered test mode w *#*#4636*#* and happily changed to 3G only. Reset phone. Now status bar does not show 3G. And I cannot reenter test mode - the entry just sits there in the phone keyboard. Help appreciated.
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