Why do I always receive messages welcoming me to travel to Guizhou when I have a Tongren mobile phone card?

Because this kind of text messages are sent by mobile companies in various places, when mobile phone users roam in transit, the mobile system in the roaming place will receive the user information, and the system will automatically send a welcome text message to inform you that you have roamed to This place is a warm reminder from the mobile company. In fact, it is also a way for the local government to promote its city, expressing welcome, courtesy, and friendship as a landlord.