New esim from an existing sim

_kud · ‎10-12-2025

Hi there,

I have recently transferred a SIM card from one phone to an eSIM on another device, and I would like to secure my eSIM with a PIN.

When I attempted to lock it, my Android device prompted me for the PIN. I entered the PIN from my previous SIM, but it was unsuccessful. I also tried 0000, but that did not work either. I now have only one attempt remaining. Could you possibly inform me of the correct PIN? Is it 1234, 1111, or something else?

Thank you.

MI5 · ‎10-12-2025

@_kud

O2 default is 0000. Previously it was 5555.

If you lock yourself out you will need a PUK, so get it before going any further.

https://www.o2.co.uk/help/phones-and-devices/sims-and-numbers/unblock-your-phone

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.

Enlli · ‎10-12-2025

1234 is sometimes used.

Check MYO2 gives you a PUK code so if you fail on 3 attempts you can use that to set a new pin

This is not O2 and we are all customers here similar to yourself and cannot answer account type queries.

jonsie · ‎10-12-2025

And in days gone by 6666 was used

Social Media Support ~ O2THIS IS NOT CUSTOMER SERVICE AND WE CANNOT ACCESS ACCOUNTS

_kud · ‎11-12-2025

Thank you!