Activate your SIM
Activate your SIM by voucher
If you've bought a top-up voucher from a shop you can enter this on the next step.
Please make sure you have your UK address before you activate your SIM
Can't find your 6 digit SIM code?
No worries. Simply enter the 13 digit SIM serial number (in some cases this may be 16 or 19 digits), which can be found on your SIM card right before 4Ggg4.
Need further help? Check out our help page.
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New to giffgaff?
Enter your voucher code
If you've obtained a top-up voucher for activation then please enter the code below along with some personal information.