1. Complete Information About your Phone *#*#4636#*#* This code can be used to get some interesting information about your phone and battery. Usage statistics 2. Factory data reset *#*#7780#*#* This code can be used for a factory data reset. It'll remove following things: Google account settings stored in your phone System and application data and settings Downloaded applications It'll NOT remove: Current system software and bundled application SD card files e.g. photos, music files, etc. Note: Read more