Mobile number portblith is very simple proces you can change all mobile network first of all you have to sms port to 1900 after performing the first step you wilk recive unique number then sms that unique number port number to your preferd service provider to port your number to that service provider now your exiting opretor will check the any dues or any other facts after that this you will recive an sms from the can changes your number then your phone will be dead for 2 hour while porting is bieng