Process to unlock your iPhone:
If you have a SIM card from a different network than EE, Orange or T-Mobile then please follow these steps:
1.Remove your SIM card and insert the new SIM card.
2.Complete the setup process.
If you don't have another SIM card you can use, follow these steps to complete the process:
1.Back up your iPhone.
2.Erase your iPhone.
3.Complete the setup assistant and restore your backup.