My T-Mobile phone (samsung trace) worked great in Xiamen, Fuzhou, and Hong Kong earlier this month. I had even better reception in most places than my fiance with her Chinese phone/sim card. 2.99 USD a min in China. 3.99 USD a min in HK. 0.20 USD to send texts anywhere. Free to receive texts. A little expensive... but it worked hassle free so I can't really complain. Calling China from America is 0.18 USD to Chinese cellphones and like 0.07 USD to landlines. I use skype when I can... but it isn't always convenient.