If a sim hasn't been activated/provisioned has the handset been locked yet?
I have an iPhone 3GS, originally bought direct from Apple, which was not locked to any particular carrier, for development/testing purposes.
To get the phone to work at all, it required a SIM, so I acquired a pay-as-you-go one from O2 which was then inserted into the phone. This SIM was never activated with the carrier, there is 'no service' and gives the message 'not provisioned' when you look in the settings. It does show a phone number though, and the 'Phone' section under settings has an O2 section. None of the options under this section work however.
I'd now like to use this phone as a phone but use Three instead of O2. So my question is - do I still need to unlock the handset with O2? A bit of research shows that an unactivated SIM hasn't been registered with Apple's servers yet, but a new SIM from Three isn't recognised when I insert it.
Any help appreciated.
iPhone 3GS, iOS 6.1.6