How can I not hear from others?

1, Apple can set the rejection of this person's SMS in the mobile phone.

2, Android, some mobile phones can be set directly, and some mobile phones can only be intercepted by a software such as a housekeeper.

Text message:

Short message service (SMS) is a part of unified communication service plan. Users can directly send or receive text or digital information through mobile phones or other telecommunication terminals. The number of characters that users can receive and send short messages at a time is 160 English, numeric characters or 70 Chinese characters. Short message is a telecommunication service in digital mobile communication system. It is a non-real-time and non-voice data communication service to transmit text or digital short messages through the signaling channel and signaling network of mobile communication system.

SMS function:

The message length of 1. SMS always does not exceed 160 English or numeric characters or 70 Chinese characters, which is closely related to the mechanism of SMS delivery based on the signaling network of communication system.

2. The second is the mode of short message transmission-store and forward. When the user does not receive it, the short message will not be lost, but will be temporarily stored in the short message center. When the user logs on to the network again, the short message will be quickly submitted to the user's mobile phone.