Using phone to make and recieve free calls via wifi/3g

[rainfreak]

Originally Posted by ww3kc

Great information! How will making a wifi call from Europe (to a US number) differ from making a call in the US or will it? Does anyone know if wifi on a Sprint Hero can be activated while the phone is in airplane mode, to keep the phone from searching for CDMA service and drainng the battery??

I don't have a Hero but every phone that I have had (TP2, TP, Diamond, etc) have worked successfully on WiFi with Airplane mode on, so I have to assume that the Hero will as well. Airplane mode turns off the CDMA radio, thereby killing the ability to have a data connection and place/receive calls, but WiFi still works.