How to Allow Messages from Unknown Users on an iPhone
By default, iPhone is set to block messages from unknown users to prevent spam and unwanted messages. However, if you want to receive messages from people who are not in your contacts, you can follow these steps:
1. Open the Settings app on your iPhone. 2. Scroll down and tap on "Messages." 3. Scroll down to the "Filter Unknown Senders" option and toggle it off. 4. Exit the Settings app.
Once you have disabled the "Filter Unknown Senders" option, you will be able to receive messages from people who are not in your contacts. These messages will appear in a separate list called "Unknown Senders" in the Messages app.
Note that disabling this option may increase the amount of spam and unwanted messages you receive. It is recommended that you exercise caution when opening messages from unknown senders, as they may contain malicious content.