7 files declare their use of PhoneNumberVerificationInterface in SMS Framework 8

AccountRegistration.php in modules/sms_user/src/AccountRegistration.php

AdminSettingsForm.php in modules/sms_user/src/Form/AdminSettingsForm.php

PhoneNumberSettingsListBuilder.php in src/Lists/PhoneNumberSettingsListBuilder.php

SmsEntityPhoneNumberProcessor.php in src/EventSubscriber/SmsEntityPhoneNumberProcessor.php

SmsUserMenuLink.php in modules/sms_user/src/Plugin/Derivative/SmsUserMenuLink.php

SmsVerification.php in src/Plugin/migrate/destination/SmsVerification.php

VerifyPhoneNumberForm.php in src/Form/VerifyPhoneNumberForm.php