A scary type of scam call causes Apple's logo and phone number to pop up on your iPhone lock screen, but there's a way to protect yourself - Business Insider

Phone phishing scams that pretend to be Apple are getting more advanced. The newest technique is that attackers sometimes pretend to call from Apple's help line. Because iPhones come with the number for Apple's help line pre-loaded in contacts, that means that Apple's logo and name pops up on the iPhone caller ID when an attacker manages to successfully fake the call's origins.
https://www.businessinsider.com/apple-phone-number-logo-shows-up-on-iphones-in-scam-calls-2019-1