How to trace and block anonymous calls

To block calls on Android, follow these steps: 1) Open the Phone app, 2) Tap the More icon (three vertical dots) > Settings > Call blocking, 3) Turn on Block anonymous calls26. Alternatively, download a third-party app like ShouldIAnswer, TrapCall, or Truecaller to help block unwanted calls.

Phone carriers offer various services to combat spam calls, including call-blocking features, call-filtering technology, and partnerships with third-party apps like Nomorobo2. These services help identify and block suspicious calls, warn customers about potential spam calls, and provide options for customers to report and block unwanted numbers.