no
I would believe so, it can be difficult to unlock your iphone though but the iphone is exclusively at tmobile in Europe.
Yes. Both the iPhone 4 and iPhone 4S work on Verizon's network. However, you will need to buy the version of the 4 or 4S that is compatible with Verizon.
No, because iPhone ringtone is in .m4r format, which is not supported by other phones
Yes if you buy an iphone and use geohot's black snow and get an international sprint sim
you go to the store and buy an ihone 3gs
It should but why buy it there and bring it here
Theoretically it would work if you had the right power cable, because the plugs are different in Europe, or you could buy an adapter for the plug to make it American, as far as discs they should work, just don't try putting dvds from Europe in it.
On the App Store. It should be installed on your iphone right after you buy it. The iphone should be at least 3G or later.
An IPhone 7
no
You buy music through the iTunes store and download it to your iPhone.
YOU CAN'T buy an iPhone 4 because THEY DON'T exist.