Apple iPhone 6 support.

Using a PUK code.

The steps below are based on using the latest software. If the screenshots or steps look different to you, you should update your software, to keep your phone working smoothly and securely.

If you enter the wrong PIN three times, your SIM will be locked. You'll need to phone us to get a PUK code to unlock your SIM. Call us on 333 from a Three phone or 0333 338 1001 (standard rates apply) from any other phone to request a PUK code.

Note: Don't try to unlock your SIM without getting a PUK code from us. If you use the wrong one it'll block your SIM completely. If it does get blocked, you'll lose all the information stored on your SIM and you'll need to get a new one.

To unlock your phone using a PUK code:


  1. Tap Unlock

  2. Enter the PUK code and tap OK

  3. Enter the new PIN you want to use, tap OK

  4. Enter the new PIN again, tap OK

    Your SIM card will now be unlocked.


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