Question: how to change your phone number with o2?
Answer: If you decide to switch to another network, you'll need to request a PAC code if you want to keep your phone number, or a STAC code if you'd like a new number. You can request your code by giving us a call on 202, signing in to My O2, or: Texting PAC to 65075, for free, if you want to keep your phone number.