I bought a CM-2000 a year ago to use for my commute bike. Generally I like this app paired with the CM-2000. I can control the camera from the phone, and get a nice electronic rear view mirror along with a recording. However, the wireless connection to my iPhone drops randomly ... sometimes lasts the entire 45-minute ride each way, and sometimes just drops the connection. Is it the app, my iPhone iOS 12.1, the camera hardware, camera firmware .... cannot figure it out. I wish shimano had better support.