1) Check you’re eligible to switch from Three
In the event that you’re out of contract, you’re free to switch whenever you like for no charge.
To find out your contract end date, you can:
Open up the Three app on your phone. Then click the ‘Plan’ icon at the bottom and scroll to the foot of the page, where you’ll find the date you’re free to leave.
Don’t have Three’s mobile app? No problem. You can also check your contract end date by logging into your Three account on Three’s site.
Prefer to call? You can get in touch with Three's customer support team on 333 from your Three phone. Or on 0333 338 1001 from any other phone (standard network charges apply).
2) Contact Three to cancel your contract and get your PAC code
Okay. Now we’re really moving. With your new phone or SIM card winging its way to you, the next thing you need to do is ring Three and tell them you’d like to leave. At this point, you’ll be given a contract end date.
You can contact Three's customer support team by calling 333 from a Three phone. Or on 0333 338 1001 from any other phone.
While you’re on the phone to Three, you also need to ask for a PAC Code. This is a short, alphanumeric code that you’ll need to transfer your phone number to the network you’re joining.
Three is bound by law to provide you with your code within two hours of your request. Once you’ve got the code, it’s a very good idea to make a note of it.
Your PAC code expires after 30 days. So if you haven’t used it within this timeframe, you’ll have to contact Three to get another one.
3) Early upgrades
Three does not offer a mid-contract early upgrade scheme that’s comparable to O2 Refresh or Tesco Mobile’s Anytime Upgrade.
However, customers on Three’s phone and contract plans are offered an upgrade with 30 days remaining on their contract.
4) Find and buy a deal on SMARTY
Assuming you’re out of contract, your next step is to sign up for the SIM-only deal you’ve selected on SMARTY. You’ll receive your SIM card in the post after you’ve passed SMARTY's credit checks.
5) Contact SMARTY to give them your PAC code
Not much longer to go now. Your next task is to get in touch with SMARTY to give them your PAC.
Because SMARTY doesn't have a customer support telephone contact number, you're required to log in to your SMARTY account and submit the PAC Code that way. You can do that right here.
6) Take out your SMARTY SIM and put it in your phone
Got your phone to hand? Okay, you now need to unlock the SIM tray using a pin or the key that came with your phone. Once it's open, insert your SMARTY SIM in your handset.
Your number won't be transferred instantly. But you will have a temporary phone number to use while the process is underway. So you'll still be able to use your phone and you'll be contactable.
7) Wait for your number to be transferred to SMARTY
SMARTY advises that the process of transferring your number will take up to two working days. The transfer usually happens between the hours of 11am and 5pm.
In the event that the transfer doesn't seem to have worked, try turning off your phone and then turning it on again.
If there's still a problem, get in touch with SMARTY via webchat service on its site.