changing number to o2
Switching to O2. If you would like to switch to O2 and you would like to keep your current mobile phone number, you will need a PAC code (porting authorisation code) from your current mobile phone network. This will allow you to transfer your mobile phone number from your current provider to O2.The process for transferring your mobile phone number from your current network to O2 is termed mobile number portability, or mobile number porting.his will allow you to transfer your mobile phone number from your current provider to O2. The process for transferring your mobile phone number from your current network to O2 is termed mobile number portability, or mobile number porting.