What happened when iPhone suddenly received verification code information from many websites?

The reason why iPhone suddenly receives verification code information from many websites may be:

It may be a system failure.

Or someone else used your number.

Being bombarded by software SMS may have offended some people, bought SMS bombing software and set your number.

In most cases, mobile phone poisoning is due to the installation of software of unknown origin.

Solution:

Delete unnecessary software.

You can format the phone and restore the factory settings. Back up files stored in your phone before formatting.

Call the operator to consult the complaint.

You can download some SMS interception software, which can intercept a large part.