Android will soon ask if you want to enable Desktop Mode or mirror your screen when connecting to an external display. A new “don’t ask me again” checkbox allows the system to remember your preference ...
If you're Android Auto connection doesn't drop, but gets weird sometimes, it's likely a settings problem.
Close-up of blank white touchscreen in car dashboard with driver hand on steering wheel, concept of navigation, modern technology, driving interface, safety, and smart vehicle. Clipping path.
My old Amazon Fire tablet is a car display.