The iPhone 3GS has been available in Europe since 2009. The iPhone 4S is also available in Europe, reaching the markets in 2011. And the iPhone 5 is rumored to be released by the end of 2012.
To charge your iPhone in Europe, you will need a plug adapter to fit the European outlets and a voltage converter if your charger is not compatible with the higher voltage in Europe. Simply plug your charger into the adapter and then into the outlet to charge your iPhone.
no
Yes, as long as you swap out the SIM Card or put it on airplane mode so you avoid roaming charges.
The iPhone 3GS.
iPhone is worldwide!
I would believe so, it can be difficult to unlock your iphone though but the iphone is exclusively at tmobile in Europe.
No. In the US, the iPhone is exclusive to only AT&T and Verizon.
Us Jailbreak me on the iPhone 4 if you have the firmware 4.0
US Cellular doesn't have the iphone, and is not getting it anytime soon. Instead of the iphone they have the Samsung Galaxy S III and claim that it is better.
If you must... I would suggest something with Android.
In the US, AT&T.