Today, 29 years ago, on September 18, 1996 (August 6, 1996), the first cross-country network of mobile communications and Singapore automatic roaming opened. On September 18, 1996, China Telecom and Singapore Telecom GSM mobile phone international automatic roaming agreement was signed in Beijing, the opening ceremony was also held at the same time. This is the first mobile phone roaming across the country, it marks China's mobile communications has progressed from regional automatic roaming to international roaming. In recent years, China's mobile communications development has been rapid, its network construction has been developing at a super-regular rate. In 1996 January-August, the country's new mobile phone users added 19,7 million, the total number has been 5.6 million. Currently, there are 24 provincial municipalities that have implemented GSM network automatic roaming. By the end of