If you have received a new SIM card — for example, after losing or replacing your original — you can update the SIM number on your plan through the Spacetalk Mobile Portal.
How to update your SIM number
Go to the portal that matches your plan type:
Watch plan: spacetalk-uk.gigs.com
Handset plan: spacetalk-uk-phone.gigs.com
Enter your email address and the security code sent to your inbox to access your account.
From your list of active plans, select Subscription Details for the plan you want to update.
Tap the arrow next to your old SIM number.
Tap the arrow next to Replace your SIM and follow the prompts to enter your new SIM number.
Save your changes to apply the new SIM to your account.
If you are still experiencing issues, contact our Support team via live chat.