I got my 4S at launch on an godawful canadian 3 year fido contract (actually 3.5 thanks to contract stacking and a dying iphone 3g.) I'm actually quite happy with my 4S, but my mom has recently expressed interest in having a smartphone, so i started to hatch a generous (or greedy, depending on your perspective) plan to give her my phone and give myself an excuse to get a 5S, unsubsidized, so as to break these contract shackles. I was wondering if anyone knows whether the following sounds like a feasible idea: -My current phone plan is actually a pretty good value for my own needs, but would be overkill for my mom (6gb data, etc). Can I finish off my current contract on a new, unsubsidized device that I get myself, without too much headache, or is it "stuck" to the 4S? -Assuming I can transfer my contract / phone number to the 5S, what restrictions remain on the 4S? At very least could I get my mom set up on a no-term plan with the same carrier (Fido) it's currently locked to? Is unlocking technically an option if she wanted to go with a different carrier? And as I recall, the 4S doesn't have separate cdma/gsm variants, so would it be able to say, be used on the bell network if it is unlocked? Thanks so much for any seasoned iPhone pro's out there who can advise!