Hi! Have 5 minutes? Let us inform you about great app for blocking spam – Robokiller! 
Robokiller is a great app for blocking spam calls and texts. Unlike other call-blocking solutions that rely solely on user feedback, RoboKiller uses a predictive spam call blocking algorithm that proactively analyzes each incoming call before it rings your phone, and determines whether it’s spam — all in less than a millisecond. They also audio fingerprint the robocall and store it in our global database so they can’t strike again. 
More information is here - https://lnk.do/wMFjUo. Our technology is brand new and 99% effective at stopping spam calls and unwanted messages.