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Trying to put a Sky Mobile Sim into an old unused iPhone.

Level 1: Joiner
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Basically I have my daughter's old iPhone 5 which I upgraded earlier this year. My ex husband lost his iPhone recently so I gave him the old iPhone 5 to use however, wheneve he puts his Sky Mobile Sim into the phone it keeps saying the SIM is not supported. I have been using the old iPhone 5 for work recently using a pay as you go SIM with GiffGaff and it worked fine however, it is not accepting this contract SIM.


I have tried into My Account and unlocking the phone however, I received an email from O2 stating


The IMEI has not been used on our network with the MPN
provided, so it will not be possible to unlatch it.


I need this phone to be unlocked so that my ex husband can get the use of it.

Message 1 of 2

Level 94: Supreme
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You'll need to put an O2 sim in the phone and use it for a couple of days, then request the unlock again Guide: Unlocking an O2 phone to use a different SIM card 

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.

Currently using:
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone 8+ (EE)
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