Like someone else said, Nepal was one of the first to introduce 3G in south (east ?) Asia. The reason NTC/other telecom service sucks is because of network congestion. If you kept up with the news, lot of people are unsatisfied in US. ( NYC, California) because iPHone is a bandwidth hog and currently at&t is not able to support such bandwidth.

Yes, iPhone exprience would suck in Nepal, but you can use it like a normal phone, iPod, play games etc, so it would not be that bad.

P.S ppl in nepal do have iPhones.