The cell phone jammer has to be the coolest invention ever! My office, which is in Texas, has been using this device for 3 days. The robo calls have disappeared completely. Bye, bye Google. Only 4 telemarketers have gotten through in 3 days, and those were quickly blocked. My husband and I have a service business and, if we want to stay competitive, we need to answer every call. Even watching for area codes does not help cull out telemarketers since most people keep their mobile number when they move, so even a call that appears to be out of state, could be a local resident needing service. At Last, Victory is Mine!! Thank you, cell phone jammer.