If you want to keep your number when you change networks, you’ll need to ask for a PAC code from your current provider.
A PAC code is made up of three letters and six numbers and is provided free by your network.
To get your PAC code you can either phone or email your network or use a PAC code request form that you can fill on your network’s website.
To begin the number transfter you need to ring or email the network you’re joining and supply them with your PAC code. You must do this within 30 days of the PAC code being issued.
The transfer of the number is normally complete the next working day.
In the meantime, leave your old SIM in your phone. This means that apart from a very brief period when the transfer is actually underway, you’ll still be able to receive calls and texts on your phone.
To check if the transfer is complete, just insert your new SIM in your handset and see if your new number is registered on your new network. If you are, everything’s gone according to plan.