Hello, A few years ago in Beijing there were sim cards for sell from vending machines. Well at least I think that is what those vending machines were selling. I am not sure which termnal that I was in and I was just transitioning thru Beijing. Has anyone else seen those machine? Has anyone one ever used those machines. Those machines were not English friendly. I don't recall seeing any of the vendor's booths that use to sell sim cards. I think those vendors use to sell sim cards for 100 RMB. I would like to buy a sim card for my phone. My phone is a smartphone. Does anyone know if I have to buy a special sim card or will they all work? Will I need any special software for my phone? Thank you any info that you can give me. Danb