What is a STAC code?

A ‘service termination authorisation code’ (or STAC code), allows you to cancel your mobile number with your previous supplier when you change networks.

Things to know about your STAC code: -

- A STAC code is issued free of charge

- Your STAC code is valid for 30 days only

- Your new provider should be able to cancel your number the next working day, but there's no porting at weekends or on English Bank Holidays

- If you don't use the STAC code, your account will remain open and you'll continue to be charged for service.

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