best free wifi call clients for cell phone between US and China

来源: 于 2012-04-20 00:40:52 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

I would like to hear people's experience here on best call client on cell phones:

1, skype

2, fring

3, mobilevoip

4, qq

5, sipgate

6. google voice, there is only free texting, for voice we need to deal with voice call back.

7. Other choice

Thanks!