Do they charge for Facetime if you have an iPhone?
yes of course you can you can get anything on itunes but its elligal and ull get in trouble/in court/prison
Can you use facetime on the iPhone 4 if whoever you're talking does not have an iPhone 4?
No you both have to have an iphone 4 :)
Does the iPhone have facetime?
The iPhone 4 and the iPhone 4S have FaceTime.
Does the iPhone 3 have facetime?
No. The only iPhone that has FaceTime is the iPhone 4.