A T-Mobile Business STAC code lets you leave T-Mobile Business without keeping your current mobile number.
T-Mobile Business is a UK mobile virtual network operator.
To leave T-Mobile Business without keeping your current mobile number, text STAC to 75075 from your T-Mobile Business SIM.
You should receive a STAC code and information about any possible charges. Give the STAC to your new provider when setting up your new service.
If you want to keep your number when leaving T-Mobile Business, request a PAC instead by texting PAC to 65075.
If you only want to check possible charges first, text INFO to 85075.