Freezeline
First aid for phone theft and fraud.
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giffgaff: block your SIM after phone theft

Your SIM receives the security codes that protect your bank and email. Until it’s blocked, the thief receives them. Here’s the fastest way in, from any borrowed phone.

1. Report it to giffgaff

giffgaff has no phone line — reporting is online:

Report it on the giffgaff site →

Checked 2026-06-12 against the official website. Spotted a change? It will be corrected in the next quarterly sweep.

giffgaff has no call centre — report online (works 24/7) to block the SIM and handset. Self-serve SIM swap to a spare SIM/eSIM completes in ~30 minutes (processed 4:30am–9:30pm) but needs access to your registered email.

The other calls that can’t wait

  1. Every other bank on that phone — including every card ever added to Apple Pay or Google Pay. Dial 159 to reach each bank’s fraud team.
  2. Your mobile network — block the SIM so the thief stops receiving your security codes.
  3. Your email — change the password, sign out all devices, then remove any forwarding rules or connected apps the thief planted.
  4. Police — 999 if it just happened, otherwise 101 or online. Get the crime reference number.

Your phone held more than one account

Banking apps, wallet cards, email, your number — they all need action, in the right order. The free Freezeline wizard asks five questions and builds your personalised plan: every number, what to say, and why in that order.

Get my emergency plan →

Free. No signup. Works on a borrowed phone.