Where is the service area of Beidou short message? Can I send text messages on my mobile phone?

At present, the service area provided by Beidou satellite system is: most areas between 43 ~ 200 east longitude, 56 south latitude and 56 north latitude; The key areas are most areas with 63 ~ 163 east longitude and 2 ~ 56 north latitude. Talking about people means covering the whole of China and part of the Asia-Pacific region. I don't know if you mean the short message communication between mobile phones in daily use or the short message communication between Beidou terminal and mobile phones. The former is not implemented at present, and the latter can be operated. You can send messages from the terminal to the mobile phone or to WeChat, which solves the problem of external communication in areas with weak and no signals such as seaside, desert, forest and mountainous areas. Looking for this short message transmission service can search the Beidou developer platform, which is helpful to solve the Beidou function that the enterprise didn't know before, easily realize the connection between the weak signal working point of the enterprise and the headquarters, and realize communication, data transmission and positioning.