iPhone locked to o2

[Rezwan]

I have moved to giffgaff and therefore my o2 app and o2 account has closed however I need to unlock phone as my sim isn’t working.  

[Bambino]

@Rezwan See this guide: Unlocking an O2 phone to use a different SIM card. - o2uk

[MI5]

@Rezwan 

You don't need to unlock to use a giffgaff sim in an O2 phone.

If you are having phone issues, I'd suggest you speak to Apple https://www.apple.com/uk/retail/geniusbar/

[anticpated]

Another thing o2 phones on contract are no longer locked to o2. At least thus is what I read. I am sure I swapped a three sim into mine and it worked OK.

[MI5]

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@anticpated wrote:

Another thing o2 phones on contract are no longer locked to o2. At least thus is what I read. I am sure I swapped a three sim into mine and it worked OK.

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That is correct since around April 2018 @anticpated, however, we don't know which iPhone the OP has or when bought.

Even so, a giffgaff sim will work even if the phone is locked to O2.

[madasaf1sh]

@Rezwan Did this phone by any chance come through Carphone Warehouse as they used to sim lock handsets to the first sim card used 

[Rezwan · Accepted solution]

Hi guys I have managed to solve the problem- it turns out the sim I had was faulty. I have got another giffgaff sim and It is now all working fine. Thanks for the help

[MI5]

Good news, as I said, a gg sim should work regardless of lock status.