Real-Time Tracking, Vehicle Diagnostics, Driver Monitoring, Anti Theft, Complete Car Security. Never Miss Your Car's Location With USA's No.1 gps tracker for car At affordable Price. Vyncs is a Real-Time GPS tracking system. That means data comes to your account in real-time as the vehicle is driven. You can browse the information using your desktop computer or Android/iOS phones (from any wireless carrier such as AT&T, T-Mobile, Verizon, Sprint in United States). The Vyncs Link OBD-II device however makes use of AT&T wireless network with a fall back on T-Mobile. The device comes with a built-in SIM card and a data plan for one year.