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Solutions for SIM activation, phone unlocking, lost devices, insurance claims, and warranty issues.
In My O2, go to Device → Unlock. Free after 6 months on contract. Takes up to 72 hours.
Full Unlock Guide →Get your eSIM QR code from My O2 or O2 store. Scan with your phone's camera to activate.
Full eSIM Guide →Call 0344 809 0202 immediately to block your SIM and IMEI. This prevents unauthorised use.
In My O2, go to Device → PUK code. Or call 0344 809 0202 with security details.
If your device problem isn't solved by these guides, contact O2 directly: