Are you trying to load pages from servers outside of China?

Always remember that here, what they call Internet is an intranet with incidental connection to the outside.

its not only the 3g its the whole internet in china.

the great firewall makes the internet slow... chinese websites are fast

Actually, only Unicom has true 3G. The rest are on Edge. Check your mobile. Does it say 3G or E? If it's E then it's not 3G. I don't have problems with Unicom. Been using that for 2 years and it works fine. 

Ya, listen to the red mask.  China really doesn't have 3G. I would call it 2.5G.  I use China Unicom on one of my phones and China Telcom on another (because of a home internet deal). China Unicom is better, but it's still crappy compared to Korea, Japan, Hong Kong, USA, or Europe.   Now they're talking about rolling out 4G.  I'll believe that when they finally get 3G.

I use an iphone on Edge with China Mobile......I wouldn't say it is that slow....though I was back in the UK recently and did notice the difference when using 3G. Am tempted to get a 5S for the 4G service but will try one out in the shop first.

Suppose it depends on what you're trying to access. I find most of the sites I use on my phone (including this one) aren't too slow.