Why do mobile phones always receive public welfare information from Luohe?

Does the subject want to ask "Why can I receive cross-regional public service messages"? Received signals from two areas. That is, you are near the boundary between two areas, and then the satellite positioning of the signal sometimes deviates, so the satellite signal thinks that you are in another area under the interference of the signal. In this case, if the whereabouts appear in these two adjacent areas, you will receive signals from these two areas. Because the mobile phone will receive signals from other provinces after crossing provinces, it will prompt this welcome message.