The "Uber 833" number is 1-833-USE-UBER (1-833-873-8237). This is a specialized service introduced by Uber primarily to assist senior citizens and individuals who may not be comfortable using a smartphone app to book transportation. By calling this toll-free number daily between 6:00 AM and 12:00 AM Eastern Time, users can speak with a live Uber representative who will help them set up an account and request a ride on demand or in advance (up to 90 days). Once the ride is booked via the phone, the user receives a text message with the driver's name, car type, license plate, and estimated time of arrival. It is important to note that this 833 number is strictly for ride requests and does not function as a general customer service or support line. For help with lost items or billing disputes, users are still directed to use the help.uber.com website or the support features within the mobile application.