The mobile phone receives two or three identical messages at a time (only two or three words).

Well, short messages are transmitted through short message channels. When your friend sends you a text message, the process goes like this. Your friend's mobile phone sends a short message to the short message platform, and then it is transmitted to your mobile phone by the short message platform. At the same time, the SMS platform will have feedback information to inform you that the SMS has been sent successfully. This is because of strong interference and other reasons, the feedback message may not be sent in time.