Why does Apple's mobile phone always have spam messages to send verification codes?

If they are all verification codes, your phone number may be bombarded by malicious short messages or phone calls sent by others with some software. You can try the following methods to solve it:

Close imessage. 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.

Turn off the reminder. Settings-Notifications-Messages-Select Address Book Only. This rule of law will not solve the problem, but it will still be accepted.

Information only accepts mobile phone numbers. Settings-Information-Send and Accept-Just delete the email check status related to AppleID. AppleID is registered by email. If it is not set, generally, the account number sent by imessage is email. If the associated email status is removed, the probability of spam harassment can be reduced, but reducing the probability cannot be completely shielded.