Can mobile phones be used in ip telephony?

Answer:
Mobile phones can be used in IP telephony. You have several choices:
- you can buy a smart phone with integrated VOIP cllient (like Nokia E65)
- you can install 3d party software on your phone (check application like Fring, Altphone, Truephone or others) and enable VOIP phone.

All these choices require IP connectivity: WiFi or 3G. If you don't have data plans or WiFi capabilities you still can enjoy saving from VOIP. You can use callback or caliin call invocation methods.
Callin - you are dialing access number provided by VOIP provider and than dial your destination number
Callback - you are dialing or sending sms to specific number and VOIP provider call you back.
You can also use application on your phone to make this 2 stage dialing process hidden.
First answer by ID1675827143. Last edit by ID1675827143. Question popularity: 3 [recommend question].