Skype和Viber流量对比

Skype流量消耗为0.241MB/min差不多4kbps就可以了

Viber

Based on testing, I found that a typical 4 minute Viber calls only uses about 600KB of downloaded data. This isn’t set in stone, as it really depends on how talkative you are and network condition. I found voice quality to be comparable to a normal GSM phone call, even on a 3G network and better than Skype.