Hi appreciate some info on China calling in these cities (Jiang Nan area -ShangHai,Su Zhou , Hang Zhou,Nan Jing ,Wu Xi )? 1)Local calls- some cities free? what are the charges/min and any difference in the various types of public phones? 2)IDD call - Understand there are IC and IP card ,what are the major advantages of both, IP card are cheaper but limited to certain public phones.? difficult to find them? Where to find these public phones to make IDD call, are they ubiquitous even in Hangzhou,Suzhou or only in main shopping areas? Many thanx and great day!