Either Edge (E) or 3G.
No, they are one of many network suppliers who provide network access in order you can use your iPhone
Network 3 coverage is a relatively inexpensive network to use, in line with most of the other providers. One can get ultra fast service for $34 a month on models like the iPhone 5.
you can't... it doesn't have a built-in network for phone use. that's why it's not called an iPhone.
you can use AT&T but thats all i know of lolz
no you can use the mobile network for Internet
Yes, you can buy international iPhone's version (a iPhone with out Internet) in eBay or amazon, some iPhone that sell outside U.S, is international iPhone' version. You can use it with any network that you like.
because your country might not have the 4g network instaled yet
When your on a wireless network nope :) When your off your wireless network Yes you are using your data usages!
Now, with the new iPhone 4S it is theoretically possible for the iPhone to be used on any mobile phone network worldwide. For GSM usage (I.E. Sim Card) the iPhone must be unlocked, and a MicroSim must be placed in the iPhone to work. For CDMA use, the iPhone must be flashed to a network, and then additional steps will most likely have to be taken in order for the iPhone to work. If you go to a professional phone store, that flashes, and unlocks phones, then they can do this for you. Also, if you plan to use CDMA, you must get a CDMA iPhone 4S, like one from Sprint or Verizon, then it may be flashed to another CDMA compatible network, or unlocked for GSM use.
You can buy the iphone from apple & put it on whatever network you want to, but you cannot buy it from a phone network & change the network.
Yes, the iPhone is indeed a phone and as with any other cell phone it needs a network to call and text. The iPhone is on AT&T, the phone network that works with the iPhone. The iPhone currently does not have any other network/cell provider.
If it's already locked on their network - yes. If it's on another carrier's network - no.