Lenovo ThinkPad 1839-4HF - secret codes.
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*#06# - IMEI (International Mobile Equipment Identity) number
ANDROID secret codes for Lenovo ThinkPad 1839-4HF
*#06# - IMEI (International Mobile Equipment Identity) number
*#*#4636#*#* - Hidden Android Testing menu Lenovo ThinkPad 1839-4HF. (Phone information, Battery information, Battery history, Usage statistics)
*#*#225#*#* - Event calendar
*#*#426#*#* - Google Play services android.
*#*#759#*#* - Rlz Debug UI. Unique Device ID, PID, ACAP other data related to application installation.
*#*#36245#*#* - Display Email debug informations
*#*#8255#*#* - For Google Talk service monitoring
*#*#64663#*#* - Check Hardware (Version, Sensors, Battery, Radio, Speakers)
*#2886# - Factory Auto Testing
*#*#273282*255*663282*#*#* OR *#*#273283*255*663282*#*#* - file copy screen (backup media files)
*#*#7780#*#* - Return to factory setting. It'll remove following things: (Downloaded applications, Google account, all data and settings)
*2767*3855# - This code is used for factory format.
*#*#7594#*#* - Change the "End Call / Power" button action in your phone.
*#*#34971539#*#* - Lenovo ThinkPad 1839-4HF Camera Information.
*#*#97#*#* - Language and Keyboard settings in Lenovo ThinkPad 1839-4HF
*#872564# - USB logging control
*#301279# - HSDPA/HSUPA Control Menu
*#9900# - System dump mode Lenovo ThinkPad 1839-4HF
*#*#46*#*# - Reset Sim in Lenovo ThinkPad 1839-4HF
*#*#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#*#* - Show Bluetooth Test Mode
*#*#232337#*# - Shows Bluetooth device address in Lenovo ThinkPad 1839-4HF
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