Switching

Switching to Three

Keeping your number

To keep your current number when you switch to Three, you’ll need a PAC (Port Authorisation Code).

Leaving your number behind

To leave your number with your old provider, you’ll need a STAC (Service Termination Code).

More information on switching

Find out more about switching to Three, get help with the switching process and see useful FAQs.

Moving within Three

Already with us and want to move over to Pay Monthly, Pay As You Go or one of our business plans? No worries - please contact us.

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Switching to a different Three account

Already with us and want to move to a Pay Monthly, Pay As You Go, or a business plan?

Leaving Three?

Leaving us doesn’t have to be painful. You can do everything easily online, through a text message, or by giving us a call.

Find out how to get a PAC or STAC or leave Three without one. 

How to get a PAC or STAC when leaving Three

Why choose Three?

Based on analysis by Ookla® of Speedtest Intelligence® data for Q3-Q4 2024. Ookla trademarks used under license and reprinted with permission.

Frequently asked questions

PAC stands for Porting Authorisation Code. You’ll need a PAC to switch to our network and keep your number. 

A PAC gives us permission to transfer your mobile number to the Three network and close your account with your existing provider at the same time.