GSM-to-network refers to a service that China Mobile upgraded its original GSM brand to a 4G network. Since the birth of GSM brand in the 2G era, 4G network has become the mainstream. Therefore, China Mobile decided to upgrade the GSM brand and provide faster broadband network services, so that users can enjoy faster, more convenient and more stable mobile communication services.

When GSM is upgraded to 4G network, users can enjoy a faster network experience, because the network speed of 4G network is much faster than that of 2G and 3G. At the same time, the 4G network also supports high-definition video, high-definition audio, large video transmission and other functions to meet the growing needs of users. In addition, after GSM network switching, users can enjoy more preferential activities, get more preferential treatment, and save users' use costs.

Users need to bring their original mobile phone number, ID card and GSM mobile phone card to any mobile business hall in China and fill in the relevant network transfer application form. In principle, users can keep the original mobile phone number unchanged. At the same time, the network icon on the user's mobile phone will become a 4G logo after GSM switching. The mobile company also launched a package upgrade service for users to choose from. It should be noted that GSM network transfer needs to pay a certain transfer fee.