Using Your Cell Phone In China

GML (UK)--Global Media, Limited which is a site for more information on using your cell phone abroad provides telephone information for the international access code in China as "86." The outgoing code is 00 followed by the relevant country code (e.g. 0044 for the United Kingdom). The city code for Beijing is (0)10. International Direct Dialling is available in most cities. Phone cards are widely available and calls can be made from post offices and hotels; phone booths on the streets are usually for local calls only. In hotels, local calls are generally free or will be charged only a nominal fee. Mobile phone networks are very advanced. Operators use GSM networks and have roaming agreements with most non-North American international operators. Internet cafes are available in most main towns.

http://www.wordtravels.com/telephonediallingcodes/Countries/China/