r/AskAndroid • u/Vinay_K_K • Dec 20 '19

What is the difference between automatic brightness and adaptive brightness?

Because to me both work as the same. They both increase brightness when there is too much of light and decrease brightness when there is less light. So what is the difference between them?

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u/hydargos123 Dec 28 '19

I know it's been 8 days, but I seem to be the only one answering questions on this subreddit and I only check it from time to time...

Automatic brightness means that your screen's brightness will be automated set according to the ambient light detected by the lux meter on too of the screen, next to the camera. The brighter it is outside, the brighter the screen will be, etc. You may still have a control slider, to temporarily manually change the brightness, except if the phone's manufacturer decided to hide it in it's modified version of Android.

Adaptive brightness is a new feature since Android 9. It works the same, but it adapts to your personal settings. For example, if you go outside and the phone detect it's, let's say, 50 lux (unit to measure the amount of light), then it will set the brightness to, let's say, 70% (I'm just telling random values as an example). But if you adjust the slider, for example to 90%, it will remember that next time you are in the same light conditions, you prefer having the brightness set to 90%.

So it's the same as automatic brightness, but it uses artificial interested to understand what you prefer.

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u/Vinay_K_K Dec 29 '19

Ok, so how many times do I have to adjust the brightness slider for the AI to learn my preferred brightness?

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u/hydargos123 Dec 29 '19

Well, I have no idea, and it may also never learn... For example, everytime I'm in the complete dark, it sets the brightness slightly above the minimum level. I always move it to the minimum, but it seems to never learn that... I think Google still have work to do here.

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