1. Call Blocking App An effective method to handle unknown calls is to use call blocking apps. These apps can identify potential spam numbers and prevent them from reaching your phone, providing an added layer of protection. 2. Do Not Call Registry By registering your number on the National Do Not Call Registry, you can reduce the number of unwanted sales calls you receive. This simple step can significantly decrease the frequency of unknown calls. 3. Verifying Caller Before sharing any personal information over the phone, it’s crucial to verify the caller’s identity. We explore useful techniques to confirm the legitimacy of the person on the other end of the line.