Hello! My brother is currently in Guangzhou with me. We flew to China together and he will fly back on his own on January 8, 2014.

He has a 90 minute layover in Beijing (both Air China flights) and I am a little nervous about him not having a way to contact me if something happens. Are there public phones in the Capital airport that he could use to call me if need be? Since he doesn't have a Chinese cell phone, he wouldn't be able to get on Skype to call. Any help to make this protective big sister a little more confident would be greatly appreciated!