Skip to content

SIM & number

Activate your first SIM

How do I activate my SIM?

Activating your giffgaff SIM is easy, just follow these simple steps.

  1. Head to and enter your SIM code.
  2. You'll then need to buy a goodybag or some credit for the first time. You can pay with your credit/debit card or a giffgaff top-up voucher.
  3. Pop your newly activated SIM into an unlocked phone and you're ready to go.

Activate my SIM

What if I have a SIM that came with my giffgaff phone?
Simply follow the process above. Just make sure you give us your giffgaff member name when asked so that we can activate the goodybag you've already paid for.
Find out more

Want to keep your old number?
Find out how

How long does it take to activate a giffgaff SIM?

Most SIMs are activated within a few seconds. On some occasions it can take up to 24 hours. If your activation is still not complete after 24 hours contact one of our helpful agents.

Tips for a smooth activation

  • If your SIM activation code is rejected, check variations, e.g. 0 (the number) and O (the letter)
  • Activations may fail because of your browser cache building up. What's this cache stuff about?

Learn more about the activation codes

Search for answers

Ask the Community

Having trouble finding the right answer? Sign into your my giffgaff account and ask the community a question. Don't be shy.

Ask a question to the Community

The Knowledge Base

Find more FAQs in our Knowledge Base