Sometimes works, sometimes it doesn't. The worst part is that sometimes gives you a false start. You think it worked and when you arrive to your vehicle, it never started. AT&T will retire the 3G signal that makes it work., My drone system will stop working on February 2022 unless II get the new module. The system initially cost me $700 plus the subscription. I will not pay for the new module, not select a more expensive plan to get the module free, or pay to install the new module.