How to reject messages instead of intercepting them?

1. For Android devices, unsubscribe: For some commercial short messages, you can reply the word "unsubscribe", so that the short message company will see the uplink content and block it, and contacts who don't want to receive short messages can join the blacklist.

2. For iOS devices, you can set to reject certain types of SMS, spam SMS, advertising SMS, etc. You can also select a contact in the information settings, and then click to block incoming calls at that number, so that you can reject the phone calls and text messages of that contact.