Your new SIM must be activated by 17:00 on the last working day before your number is transferred. For example, if your transfer is scheduled to take place on a Monday, your SIM would need to be activated by 17:00 on the previous Friday.
To activate your new Three SIM, put it into your device and switch it on. When you see signal bars, that’s your SIM activated. You might need to switch Wi-Fi off to see the signal bars.
STAC is short for Service Termination Authorisation Code.
Not everyone wants to keep their old number when switching networks. A STAC lets you switch over to Three and get a brand new number from us.
To find out if you’ll be charged by your old provider for closing your account or if you’ve got anything outstanding to pay, text INFO to 85075 from the number you want to keep. Sending this message is free.
Please note: If you’ve got multiple lines with your old provider, you may need to contact them directly for more information.