1) Check you’re eligible to switch from SMARTY
If you’re out of contract with SMARTY, you can switch network any time you like and it won’t cost you a thing.
To find out if you’re out of contract, you’ll need to head to the SMARTY site and log in to your account.
Just log in, click on the menu icon, select 'Account settings' and the rest is easy.
And if you’re interested in switching but want a bit more information first, text INFO to 85075.
2) Contact SMARTY to tell them you want to leave and get your PAC code
Your next job is to contact SMARTY to tell them you’d like to leave. To do this, just text PAC to 65075 to get your PAC code. It’s this short, alphanumeric code that will enable you to transfer your existing phone number to the network you want to join.
SMARTY doesn’t have a customer service telephone number to call. But if you prefer, you can get in touch by email to request your PAC code via its website.
Once you’re logged in, click on the menu icon. Then choose Account Settings and go from there.
SMARTY will then send your PAC code to you by email. By law, networks have to provide you with your PAC code within two hours of you asking for it. So you won't have long to wait.
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.