*#06# - IMEI (International Mobile Equipment Identity) number
*#*#4636#*#* - This code can be used to get some interesting information about Samsung Galaxy Tab 2 7.0 P3100 WiFi 3G 8GB and battery. (Phone information, Battery information, Battery history, Usage statistics)
*#*#225#*#* - This code show the number of festivities and events in your calendar
*#*#426#*#* - This code show Google Play
*#*#759#*#* - RLz Debug UI system hidden menu.
*#*#36245#*#* - Display Email debug informations
*#*#8255#*#* - To launch Google Talk service monitor
*#*#197328640#*#* - Enter service mode to run various tests and change settings
WLAN, GPS and Bluetooth Test Codes:
*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* - WLAN test (Use "Menu" button to start various tests)
*#*#232338#*#* - Shows WiFi MAC address
*#*#1472365#*#* - GPS test
*#*#1575#*#* - For a more advanced GPS test
*#*#232331#*#* - Bluetooth test
*#*#232337#*# - Shows Bluetooth device address in Samsung Galaxy Tab 2 7.0 P3100 WiFi 3G 8GB
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