I just heard about the Nimbuzz apps.Some question about it
(1)If I use nimbuzz to call my gf,is it free or it still use data usage?
(2)Can I still use voice call in nimbuzz if I register BIS but turn off the data usage and use WIFE?
(3)Does it have additional charge when I use to voice call people from oversea?
(4)If it does use data usage,how much does it use per min call? Give rough answer