This device comes with only an ultra-basic startup guide; I had to hunt and poke about the Internet for most of an hour to locate an online owner's manual, and even then I found it only via following a well-hidden side-link

If you stop somewhere en route to your destination, leave bluetooth range with your phone, and then start driving again you must completely shut down and restart your phone's Smart Link app each and every time or else the data-link will fail

But... Why not use an additional wire, at least optionally, to keep the USB power-option open?Worst of all is the fact that apparently you cannot use the features in the much-vaunted "Smart Link" app unless the app is currently up and running actively on your phone with the screen lit up