It can be to regular phones/ipod touches
both
In order to do SMS messaging, you will need to first own a phone that is capable of doing it. The iPhone is capable, as is other phones such as the BlackBerry.
Yes, an iPhone is just like a regular cell phone in it's ability to call other phones. The thing that makes it an iPhone is it's manufacturer and special features available on that particular make of cell phone.
No, because iPhone ringtone is in .m4r format, which is not supported by other phones
none
none
no, iphone apps are only made to work with iphones, not other phones...
the iPhone is more technical than other phones
Yes.
you can't. the iPhone company doesn't supply zwinky for the iPhone. it's not allowed in by other phones either. just PC's
Nokia camera phones are generally better than any other camera phone on the market, including the iPhone. The iPhone's trick is that it over exposes the photos to make them seem more vivid.
It depends on what type of phones your friends have because the iPhone has some accents that were made just for other iPhone or a Smart phones alike
Phones like the iPhone and other phones with built in GPS modules can be tracked. The iPhone is the easiest to do, with the MobileMe platform offering free tracking and location services.