Domestic mobile phones always receive text messages of the same number.

This is the anti-theft tracking function of mobile phones, which are generally available in domestic mobile phones. Mainly to get the mobile phone back after it is stolen. Specifically: turn on anti-theft tracking and set a tracking number (preferably family or friend's, but not your own SIM card number). When the phone number is stolen, once the other party replaces the SIM card (that is, you remove it and replace it with your own), then the other party's SIM card will send a message to the tracking number you set, and the message is the one you received ("Your phone is used by this number, please call the police in time if the user is not the owner." )。 So it is very likely that a good friend or relative's mobile phone was stolen, and your mobile phone number was set as a tracking number. You'd better ask. The owner of the number that sent the message is probably the current mobile phone holder (I dare not say whether it was stolen). This short message is sent automatically and will be sent every time it is turned on, and the mobile phone owner does not know. . . . Typing is tiring. Give me some advice.