My iPhone 4S can be infected by malware?

Hello:

A few days ago I received a notification on my iPhone 4S that my unit can have been infected by a 'virus '.  The notification advised that I update to iOS 9.3 but is not available to me in the settings (it was my understanding that such update has yet to be released, in any case).  Should I worry that my iPhone has a virus, and if so, what measures should be taken to remedy the problem?  I have yet to notice any suspicious behavior on the part of my iPhone.

Thank you.

No, all this popup message will be a scam.

Phony 'technical support' / 'ransomware' popups and web pages

Tags: iPhone

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