*#*#232339#*#*
OR *#*#526#*#* OR *#*#528#*#* -
WLAN test (Use "Menu" button to stat
various tests)
*#*#232338#*#* - Shows Wi-Fi MAC address
*#*#1472365#*#* - GPS test
*#*#1575#*#* - Another GPS test
*#*#232331#*#* - Bluetooth test
*#*#232337#*# - Shows Bluetooth device address
