17-07-2017 01:11 PM
Have you tried reading the threads in the forum you have posted in as they would explain what you need to do.
Try this EE guide to unlocking.
17-07-2017 01:15 PM
To unlock a 2nd-hand phone you need to call Customer Services on 0800 956 6000 (option 2, option 4) to put you in touch with the Unlocking Team to request an Unlock Code. You will be asked for your email addy. They will take payment (of £8.99) from any valid UK bank card.
Once the process has been started you will receive an email from the Unlocking Team to process the unlock. It can take up to 10 days to complete the unlock.
But even so beware that EE could still refuse to unlock it. Many phones sold 2nd-hand have been reported lost or stolen, have been sold by the original owner when under 6 months old without EE's permission or have money owing on them.
If that is the case your only remedy is against whoever you got the phone from.