A robocall is a phone call that uses a computerized autodialer to deliver a pre-recorded message, as if from a robot. Robocalls are often associated with political and telemarketing phone campaigns, but can also be used for public service or emergency announcements. Multiple businesses and telemarketing companies use auto-dialing software to deliver prerecorded messages (appointment reminders, booking details, etc.) to millions of users. Some robocalls use personalized audio messages to simulate an actual personal phone call. The service is also associated to be prone to scams.