Using VoIP from Android via GPRS? Is it possible to use VoIP over gprs from an Android phone? Either using a SIP client or Skype?
There a quite a few SIP clients last time I looked, but you need some sort of ID you have to purchase elsewhere to make use of them. Skype is supposedly coming soon and I think is available right now for Verizon Android phones.

Ditto Fring. Its a great app and probably one of the easier ones to use. Plus you can do video conferencing with Fring.