Switching to Three
Leaving us doesn't have to be painful. You can do everything you need to easily, whether online, through a text message or on a phone.
Frequently asked questions.
What’s a PAC?
You’ll need a PAC code to transfer your number to us.
PAC stands for Porting Authorisation Code. A PAC gives us permission to bring your mobile number from your old provider over to your Three account.
How do I use a PAC to switch to Three?
Switching to Three is easy:
- 1. Get a PAC from your old provider
- 2. Activate your new SIM
- 3. Fill out our switching form
Your new SIM must be activated by 5pm on the last working day before the transfer takes place. For example, if your transfer is scheduled to take place on a Monday, your SIM would need to be activated by 5pm on the previous Friday.
To activate your new Three SIM, simply pop it into your device and switch it on. Once you see signal bars, that’s your SIM activated. On some phones you might need to switch off Wi-Fi to see the signal bars.
What’s a STAC and when would I use one?
STAC is short for Service Termination Authorisation Code.
Not everyone wants to keep their old number when switching provider. A STAC lets you switch over to Three and get a brand new number from us.
How do I use a STAC to switch to Three?
Switching to Three with a STAC is easy.
- 1. Get a STAC from your old provider
- 2.Fill out our switching form
Will my old provider charge me for leaving?
To find out whether you’ll be charged by your old provider for closing your account, or to see if you have anything outstanding to pay, just text INFO to 85075 from the number you want to keep. Sending this message is free.
Please note: If you have multiple lines with your old provider, you may need to contact them directly to get more information.