How come android headunits in a car boot up so fast despite being very under powered compared to phones these days ?
My car's android unit has some quad core processor , and it instantly boots up and reaches the home screen where as my phone takes almost 30 seconds or a minute to reach the home screen despite having much better hardware.
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They don't have as much background software recording everything and phoning home.
Give it time, and they may get there.
Source: I'm just bullshitting. I don't know jack shit about what runs on a new car. I don't buy new cars.
But my DeGoogled phone boots really fast, so I might still be right, unfortunately.
Basically, that kind of is it.
They have less background services overall as well as less hardware to initialise. Probably some other differences as well.
I'm not super familiar with Android Auto, but have worked with other embedded systems that are based on customized OSs. They typically run the bare minimum subset of features to do what they're designed to do.
It's also possible they don't boot every time but just kind of hibernate.
I would bet they have their own battery and use that while the car is off
Hmm. Maybe. Or at least an internal battery to keep it in "sleep/powersave" without draining the car's battery.
Now I want to tear one down to find out 😆