A STAC, or Service Termination Authorisation Code, is a specific code used in the United Kingdom's mobile telecommunications industry. Its primary function is to facilitate the closure of a mobile phone number and contract with your current provider when you switch to a new network, specifically when you do not wish to keep your existing phone number.
Purpose of a STAC Code
The main purpose of a STAC code is to simplify the process of ending your relationship with your current mobile network without carrying your old number over to your new service. It acts as an official authorization to disconnect your old number and terminate your account, allowing you to start afresh with a new phone number from your new provider.
When to Use a STAC Code
You should request and use a STAC code in the following situations:
- You are moving to a new mobile network and want a completely new phone number.
- You wish to cancel your current mobile contract and permanently discontinue the use of your existing phone number.
- You are opting for a fresh start with a new provider and prefer to be assigned a brand-new number.
STAC vs. PAC: Understanding the Difference
While both STAC and PAC codes are essential for switching mobile providers, they serve opposite purposes concerning your existing phone number.
| Feature | STAC Code (Service Termination Authorisation Code) | PAC Code (Porting Authorisation Code) |
|---|---|---|
| Purpose | Closes your existing mobile number and terminates the associated account. | Transfers your existing mobile number from your old provider to your new one. |
| Outcome | You will be given a new phone number by your new provider. | You keep your current phone number. |
| When to Use | When you do not want to keep your old phone number and wish to close it down. | When you do want to keep your old phone number and transfer it. |
How to Obtain a STAC Code
Obtaining a STAC code is designed to be straightforward, usually taking only a few minutes. Most UK mobile providers offer multiple ways to request one:
- Text Message: The quickest method for most. Simply text the word "STAC" to 75075 from the mobile number you intend to close. Your provider will typically reply with your unique STAC code, along with any early termination charges and remaining credit balance, within minutes.
- Online Account: Many mobile network operators allow you to request a STAC code directly through your personal online account portal or via their official mobile app.
- Phone Call: You can contact your current provider's customer service helpline and verbally request a STAC code. Be prepared to verify your identity.
A STAC code is valid for 30 days from the date it is issued. If you don't use it within this period, it will expire, and you'll need to request a new one if you still wish to proceed.
What Happens After Using a STAC Code?
Once you provide your STAC code to your new mobile network provider:
- Number Disconnection: Your old mobile number will be disconnected and cease to be active.
- Contract Termination: Your contract with your previous provider will be officially terminated. Be aware that you may still be liable for any outstanding charges, such as device payments, or early termination fees if you are still within your minimum contract period.
- New Service Activation: Your new provider will activate your service with a new phone number, allowing you to begin using their network.
