Re: Sounds like Vodafone is unhappy
"And does that get you out of the contract?"
If you sign up for a contract theres no technical solution that can fix that, I've got two sims at the moment and changing those doesn't affect contract law.
What I do find amusing is people clutching the idea of a sim card like it's a religious object passed down from a higher being eons ago and any attempt to change that how things function around it are an act of heresy. Rather than a sim being a standard agreed upon a few years ago (90/91 iirc) which now Apple (and others) are trying to change for something they think will make things easier.
They could be wrong.
And unfortunately technology moving on makes things, like old phones, obsolete.