Apple received unknown text messages, all of which were A.

This is spam message 1. Report spam in the Messages application. 2. You can report iMessage information suspected to be spam from the Messages application. If you receive an iMessage message from someone who is not in your address book, a "Report Spam" link will be displayed under this message. 3. Click "Report Spam", and then click "Delete and Report Spam". Messages forwards the sender's profile and this information to Apple and deletes this information from your device. You cannot undo deleting information. 4. Reporting spam will not prevent the sender from sending other information. If you don't want to receive these messages, you need to block this contact. 5. To report SMS and MMS, please contact your operator.