1) Check you’re eligible to switch from TPO
All TPO SIM-only deals operate on rolling contracts. So you’re free to leave whenever you like and it won’t cost you anything, but you’ll have to give 30 days' notice.
To find out your contract end date, call 500 from your TPO handset. Or 0333 313 7760 from any other phone (standard network charges apply).
Opening hours are 9am-5pm Monday to Friday and 10am-4pm at weekends.
If you’d prefer not to call, you can also find out your contract end date by signing into your TPO account.
2) Contact TPO to cancel and ask them for a PAC Code
Got a concrete contract end date? Good. Now you’ll need to pick up the phone and tell TPO's support team that you’d like to leave. You can reach them on the numbers listed under step 1.
While you’re speaking to the support team make sure you ask for a PAC Code.
This is a short sequence of numbers and letters that you’ll need to give to the network that you’re joining, so that they can transfer your existing mobile number.
Networks are required to supply you with your PAC Code within two hours of your request.
The critical thing to note is that PAC Codes expire within 30 days. If you haven’t used your PAC Code within this timeframe, you’re required to get in touch with TPO again to request a new code.
3) Find and buy a new deal from O2
Your next task is to choose and sign up for a new deal contract from O2. Once you’ve passed O2's credit checks, you’ll receive your phone or SIM card in the post.
4) Contact O2 to give them your PAC code
Now you’ll just to ring O2 to give them your PAC. You can get in touch with O2's customer support team on 034 4809 0202 from a landline (standard network rates apply).
5) Insert your new SIM card from O2
If you got a new phone, use your pin-key to unlock the handset's SIM tray. Then insert your O2 SIM.
If you went for a SIM-only deal, you can just put the O2 SIM in your existing phone.
While your number is being transferred, you'll be supplied with a temporary number to use. So you can still make and take calls and do whatever you'd normally do on your phone.
6) Wait for your number to be transferred from O2
The transfer should be complete the next working day. But this varies depending on the network you're joining.
The transfer could also take a little bit longer if a weekend or Bank Holiday gets in the way.