These were all traditional phones. I don't know if I could simply replace the SIM from my new Galaxy S3 from T-Mobile with a SIM from AT&T, but I'd bet I can.
You mean, in America. In most countries, GSM phones from carriers are network-locked.From my experience, GSM phones aren't locked.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.
This does not apply to the user of a stolen phone. I see lots of places in London offering to unlock mobile phones. I do not know if it is legal or illegal in the UK to do this. But why is it necessary?There is already a contract holding you to pay monthly for 2-3 years, no reason to lock the phone down.
It is a machine. It is more stupid than we are. It will not stop us from doing stupid things.
Ubuntu user #33,200. Linux user #530,530
AT&T and T-mobile sell prepaid phones. They are GSM phones, I don't know if there is any network lock involved there or not.
Google uses open-source and that tends to mean they aren't a restrictive company to end user modification, or are expected to have it open under licence. This is why most of the images are to suit Google hardware.
I wonder if this could have anything to do with the price of unlocked phones, a few months ago I looked at buying an unlocked phone and noticed it was almost three times the cost of the same phone if I bought it from any US carrier. It's always been a little higher for unlocked phones but trippling in price seems to be excessive. I was only looking at one model of phone so I don't know if this is the same across the board.