1) Check you’re eligible to switch from Tesco Mobile
Certain that you’re out of contract? Good news: that means you’ll be able to switch network for no extra charge.
If you’re not sure if you’re still under contract or want to check your end date, you can get in touch with Tesco Mobile's customer support by calling 4455 from your Tesco Mobile phone.
Or you can ring 0345 301 4455 from any other phone (standard network rates apply).
Opening hours are 8am-9pm Monday-Friday. 8am-8pm Saturdays and 10am-6pm Sundays.
Alternatively, you can find out your contract end date by logging into your Tesco Mobile account or within the Tesco Mobile app on your phone.
Decided to keep your existing phone and get a new SIM only deal on a new network? Okay, that means you may need to get your phone unlocked, so it’ll accept the new SIM.
So while you’re on the phone, make sure you ask Tesco Mobile whether your phone is unlocked. If it is and you want to unlock it, ask them for your pin unlock key (PUK). Tesco Mobile will send you this and you can use it to unlock your handset.
2) Contact Tesco Mobile to tell them you’re leaving and get your PAC Code
Parting is such sweet sorrow. But perhaps not in this case.
Your next job is to get in touch with Tesco Mobile to tell you’d like to leave. You can do this using the phone numbers in step 1.
While you’re on the phone, make sure you ask for a PAC Code. This is a short sequence of letters and numbers that you’ll need to transfer your existing telephone number to the network you’re joining.
The law states that networks must provide you with your PAC Code within two hours of your request.
The critical thing to note is that PAC Codes expire after 30 days. If for any reason, you elect not to use your PAC Code during this timeframe, you’ll need to get in touch with Tesco Mobile to request a new one.
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.