said by Alex J :
Of course and when people screw around with the OS on their unlocked phone and brick it or mess it up some other way they'll blame the carrier and demand anew phone for free.
Only if they're stupid. Flashing something like CM10 is elementary grade difficult if you can read. If you're worried, don't.
Stupidity has nothing to do with it. Everybody has attributes.
Computers are easy to some but difficult to others just like cooking is easy to some but difficult to others.