Jan 14, 2026 · You don't have to keep your current number if you're joining or leaving us. You're more than welcome to get a new O2 phone number – or one from your new provider if you're switching …
How to switch to/from PAYG, Pay Monthly or SIM Only - O2
Give us a call if you want to keep your original Pay As You Go number. To keep your number, you'll need your new Pay Monthly phone number from your O2 confirmation email or SIM pack.
If you're staying with your current provider but just switching from a physical SIM to an eSIM, you usually won’t need a PAC – just get in touch with your network and they’ll guide you through activating the …
How to change your SIM card and keep your number the same
Apr 26, 2024 · PAC stands for Porting Authorisation Code and it allows you to keep your number when switching network providers. Essentially, requesting a PAC code notifies your old provider that you’re...
Apr 13, 2026 · Getting a PAC (Porting Authorisation Code) is the key to keeping your number when you change mobile networks, and in this guide we’ll look at the whole number porting process with …