*#06# - IMEI numberIMEI (International Mobile Equipment Identity) is a unique 15-digit number assigned to all cellular devices. IMEI is short for International Mobile Equipment Identity and is a unique number given to every single mobile phone, typically found behind the battery. IMEI numbers of cellular phones connected to a GSM network are stored in a database (EIR - Equipment Identity Register) containing all valid mobile phone equipment.*#*#273282*255*663282*#*#* - Immediate backup of all media files*#*#4636#*#*This code can be used to get some interesting information about LG Optimus G E970 and battery. It shows following 4 menus on screen:* Phone information* Battery information* Battery history* Usage statistics*#*#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 applicationsIt'll NOT remove:* Current system software and bundled applications* SD card files e.g. photos, music files, etc.PS: Once you give this code, you get a prompt screen asking you to click on "Reset phone" button. So you get a chance to cancel your operation.*2767*3855# - Think before you give this code. This code is used for factory format. It'll remove all files and settings including the internal memory storage. It'll also reinstall the phone firmware.PS: Once you give this code, there is no way to cancel the operation unless you remove the battery from the phone. So think twice before giving this code.