Three PAC Code: keep your number and switch networks

Joining Three from another network and keeping your number

To keep your number, request a PAC code from your current network and give it to Three.

You can usually give Three your PAC code when you order, or after your new SIM card or eSIM has been activated.

1. Request a PAC Code from your current network

You do not need to change your number when you join Three.

Request a PAC (Porting Authorisation Code) from your current network using one of these methods:

• Text: From your current phone, text "PAC" to 65075. You will receive a text back with your code within a minute. This is a free service from Ofcom (the UK's communications regulator).
• Online: Some networks will allow you to log in to your current online account and request your PAC code.
• Phone: Call your current provider's customer service phone number from your current phone.

Requesting a PAC does not cancel anything. Your current plan carries on as normal until the code is used, and if you never use it, it simply expires after 30 days.

The text with your PAC will also show any early exit fees you would pay or credit you would lose by switching, so check it before you hand the code over.

2. Order a SIM only deal from Three

If you have not ordered yet, compare current Three SIM only deals below.

If you already have your new SIM, continue to Step 3.

If Three asks for your PAC code during checkout, enter it there. If not, wait for your new SIM or eSIM to activate, then give Three the PAC code using the method below.

3. Give the PAC code to Three

Once you have your PAC code, here is how to give it to Three:

• Online: Enter your PAC code at checkout when you order, or fill in the number transfer form on Three's website afterwards.
• Phone: Call 333 from your Three phone or 0333 338 1001 from any other phone.
• In-store: Visit a Three store and a member of staff will transfer your number using your PAC code.

4. Wait for your number transfer to Three to complete

Three will send the transfer request to your current network.

Your number should move to your new Three SIM within 1 to 2 working days.

Leaving Three: transfer and switch your Three number to a different network

To leave Three and keep your number, request a PAC code from Three and give it to your new network.

You can usually give your new network the PAC code when you order, or after your new SIM card or eSIM has been activated.

1. Request a PAC Code from Three

Here is how to get your PAC (Porting Authorisation Code) from Three:

• Text: Text "PAC" to 65075 from your Three phone. You will get a text back with your code within a minute. This is a free service from Ofcom (the UK's communications regulator).
• Online: Log in to My3 or the Three app and go to Manage your plan, then Leave Three, to request your PAC code. You can also ask via live chat on Three's website.
• Phone: Call 333 from your Three phone or 0333 338 1001 from any other phone.
• In-store: Visit a Three store and request a PAC code from a member of staff.

2. Order a SIM only deal

If you have not ordered yet, compare current SIM only deals below.

If you already have your new SIM, continue to Step 3.

If your new network asks for your PAC code during checkout, enter it there. If not, wait for your new SIM or eSIM to activate, then give your new network the PAC code using its transfer process.

3. Give the PAC code to your new network

Once you have your PAC code, here is how to give it to your network:

• Online: When you order your new SIM card online, you can enter your PAC code.
• Phone: Call your new network's customer service number and provide them with your PAC code.
• In-store: If your new network has a store you can visit a store, and a staff member will help you transfer your number using your PAC code.

Your new network will handle the transfer. Give them your PAC code within 30 days of receiving it — after that it expires and you will need to request a new one from Three.

If you want a new number instead, text STAC to 75075 and give the code to your new network.

4. Wait for your number transfer to your network to complete

Your new network will send the transfer request to Three.

Your Three number should move to your new SIM within 1 to 2 working days.