*#0000# – Entering this code gives the firmware version of your phone’s software.Check your firmware version and make sure that you have the latest updated firmware.Newer firmware is made in order to rectify bugs and provide new features.
*#06# – IMEI(International Mobile Equipment Identity)Number – IMEI number is like Finger print.Each mobile phone has a unique IMEI number. *#7780# – This code restores the original factory settings without affecting any of your files.It is also called soft reset.
*#7370# – This code will completely format your phone deleting all your files.It will take your software to the same state, as you first received your phone.Use this code only if something wrong happens with your phone’s software like virus attack.It is also called hard reset.
*#2820# – This code tells your device’s bluetooth ID.It can be used for manually adding bluetooth devices.
*#62209526# – Shows MAC address of the WLAN adapter.This will be useful while connecting to internet through your phone’s Wifi connection.
*#92702689# – Life Timer – Shows total call minutes since very first call.