Get the right code
For a single mobile number, text PAC to 65075 to request a code to keep it. If you want a new number instead, text STAC to 75075. Multiple-line and certain account situations may require the official online or telephone route.
Check before submitting
Read the switching information for any early exit amount and remaining device balance. PAC and STAC codes last 30 days. Requesting a code by itself does not complete the switch.
Let the receiving provider act
Give the code to the new provider through its official process. Ofcom says the switch must be completed within one working day, subject to the applicable process and agreed timing. Keep the old SIM available until the move is confirmed.
Test the result
Check incoming and outgoing calls, texts and data. Authentication messages may need attention after a transfer. If the old account has a credit or final bill, ask the old provider how it will be settled.
Take the next step carefully
This is general information, not account-specific advice. Check the official provider before changing service. For consumer switching and contract information, consult Ofcom’s switching guidance and contract change guidance.