Apple iphone wont allow voip calls over 3G?

I’ve nokia s60v3 device(e71), at some point i have thought like i should have buyed apple iphone despite the fact i hate touch screens, for all its glossy apps and all the sync apps for rtm,evernote, twitter… but today after reading gigaom article on apple’s voip functionality, i’m happy i didnt buy apple iphone, i hate too much control.
Apple isnt allowing voip calls over 3G, which prevents nimbuzz, truphone and fring to work, is it working in india for iphone users?