Why can't Unicom's mobile phone number receive the cross information of time and space?

If the space-time partner can't contact the mobile phone number, he can only contact the telecom business hall to inquire about the mobile phone number changed by this person.

Space-time companion, a new term that gave birth to COVID-19 epidemic. It means that my phone number and confirmation number stay in the same space-time grid (the range is 800 m * 800 m) * * for more than 14 minutes, and the cumulative stay time of any number in recent 14 days exceeds 30 hours, and the found number is a space-time companion number.

Before the time-space companion, people who investigated the risk of infection in COVID-19 were managed by close contacts. Comparing their definitions, we can find that the biggest difference lies in the further expansion of their spatial scope.