For those of you who haven’t made the leap to Gingerbread, for whatever reason but would really like to have WiFi calling on your Android device, check out XDA Senior Member Segnaro‘s latest work.
The XDA member, after spending many hours trying to get WiFi calling working on the Samsung Vibrant running Android 2.2.1 has finally succeeded! You’ll need to flash using CWM, and note that the mod was tested on the BiWinning 3.0 ROM.
The XDA member notes that you should test both WiFi calls and Normal calls are working and that WiFi calling does not force close.
Fore more information and to download the zip, head on over to the forum thread._________