I can't help but wonder about this in light of computers. If I buy a computer with Windows installed on it, and then down the road I decide I want to put Linux on it, or some other OS, am I infringing a copyright?
If I buy a phone and complete the contract, so that now the phone is fully mine, and it has one company's version of Android on it and I decide to put Cyanogenmod on it, have I infringed a copyright? How?
Maybe that's a bad example. How about books? I know what copyright infringement in a published work looks like. I take someone else's work (both writer and publisher) and then do up my own version to sell or give away. I profit either from income or good will for the gifts given, and the author and publisher are cut out. How does changing the software and/or firmware on my phone infringe a copyright?
Maybe somebody can come up with an example that would explain it for me, because I don't get the copyright infringement aspect.
@WyomingKnott - really good point, in my opinion. Once the contract is completed then I should have the right to do what I want with the phone. Until then, the "ownership" is sort of shared with the phone company - kind of similar to the house that the bank holds majority financial interest in. But don't forget - the moon is a harsh mistress, and so are the phone companies.