Spam calls are a growing problem in the US and there is no indication that this problem will be solved in a short time. While these uncertainties continue, Apple is trying to prevent this by developing features for fake calls.
Apple’s new software, announced at the WWDC 2019 event earlier this month, is expected to block unknown and spam calls. The new feature uses Siri to filter calls from phone numbers that aren’t available in the Contacts, Mail, and Messages app on your iPhone, preventing fake calls.
The feature does not come by default and users need to enable it by entering the Settings menu. In iOS 13, you can simply select Phone from the Settings menu and then enable ‘Silence unknown callers’.
If there is a phone number specified in a third-party service, such as Facebook Messenger, Slack or WhatsApp, which is not referenced in Apple’s Messaging application, your iPhone will not detect and block them. The same applies to an email sent to one of your accounts that are not linked to Apple Mail.
Apple is not the only company trying to reduce spam calls. Last year, Google announced a feature for Pixel 3 that can display and filter spam searches.