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I’ve successfully got my iPhone unlocked several times and I’m aware that you can do this 3 times per 12 months. However I have a contract with 3 phones so in theory can I get 9 phones unlocked? Obviously I’ll never need this but I might need 4 as the family do tend to change their iPhones quite often.
A way round the regulations for when the contract comes to an end is for a family member to use the phone or phones on PAYG for 30 days, the unlock request can then be done in the family members name using the PAYG number.
Hope this will help with getting the extra phone unlocked.