A PAC is the instruction used when changing UK mobile provider while retaining a number. For one line, text PAC to 65075 from the existing SIM. Read the reply for the code, its expiry and any relevant leaving information. Give a valid code to the receiving provider; a code request alone is not a completed transfer.
What to establish first
Record the old service, the new service and the transfer date. Keep both SIMs accessible until calls and messages reach the intended line. Update account recovery details if the number is also used for verification.
Keep the distinction clear
A PAC lasts 30 days. Ofcom says the receiving provider must normally complete the switch within one working day. Multi-number accounts can require an online or telephone request. In most cases a number can still be transferred within one month after cancellation; contact the former provider promptly.
Open your preparation checklist
These ticks stay on this open page only. Nothing is submitted.