What if Apple's mobile phone always receives spam messages with different numbers?

Settings-Information-Turn off imessage. Turning off imessage can reject all imessage messages, but it will also make it impossible to use imessage, which is suitable for users who do not use imessage.

Step 2 turn off the reminder

Settings-Notifications-Messages-Select Address Book Only. This method treats the symptoms rather than the root cause, but it will accept information sent by users who are not in the address book.

3. Information only accepts mobile phone numbers.

Settings-Messages-Send and Accept-Simply remove the email check status associated with the AppleID. Apple ID is registered by email. If it is not set, generally, the account number sent by imessage is email. If you delete the related email status, you can reduce the possibility of spam harassment. But now many programs can scan mobile phones, so this can only reduce the probability and cannot be completely blocked.