How good is 3G service in Shenzhen?

I have just accepted a job that will require a considerable amount of video conferencing.  The internet connection in my home is fast enough for video but sometimes the cable coming into my apartment goes dead.  I am going to replace the router but I am looking for a plan "B".  Is 3G service in Shenzhen fast enough - and dependable enough to use for video conferencing with Skype?

I use China Unicom for data services.  From my testing using speedtest.net app on my android phone it averages about 0.75mbps and a few times I was able to get 1.5mpbs.

I have tried skype and it actually does work ok with video.  There are occasional skips and stutters in the video and audio.  But I think it was acceptable.