No sorry the Iphone uses a different type network than the Nextel service.
yes. once an iphone is universally unlocked it will work.
As long as it is a GSM device and not a Nextel iDEN device then it will work as long as the device has been unlocked.
No it wont
Yes
no unless it is unlocked... .
Yes it will. I have mine with Centennials service
yup get it unlocked and you good to go!
No
YES it should although if its jailbroken/unlocked it will lock
Yes. Unlocked iPhones do work on the Orange network in Israel. One just needs an appropriate 3G sim card.
No
You can visit apple.com or visit a local apple store for unlocked iPhone.