Spam messages
Keep getting text messages that my phone has been infected with spam. Should I believe this?
iPhone 6s, iOS 14
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Best reply
No. They are spam as you suspected. This is a common practice, by bad actors, to gain access to your phone ... or at least, personal information from you. Just delete them.
Ref: Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support