Asking help with virus possibilities
I think there is virus or malware in my iPhone.. I get every few hours an alarm about calendar.. when I open calendar app there is nothing.. I updated my iOS right now, but the problem still exists.
No viruses on your iPhone, just spam or scam attempts. DO NOT respond.
Using iOS 13.x.x = Settings>Passwords&Accounts>Accounts... delete the rogue calendar you subscribed to
Using iOS 14 or later = Settings>Calendar>Accounts... delete the rogue calendar you subscribed to
Be careful for the future.
Regards
Giulio