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The Xiaomi Mi A2 (Also known globally as the Mi 6X) was released by Xiaomi in July 2018 in various internal memory configurations. It is part of the Android One program which guarantees updates for two years.

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Backlight only works during startup

I recently changed the screen on a Xiaomi Mi A2 Lite. When I start the phone up, the Android One logo displays with full brightness and colour without any issues.

The problem is that once the phone turns on there is no backlight. You can still see the display if you are in a dark room and everything seems to show correctly. I have tried updating and factory resetting but still having the same problem.

Any advice would be much appreciated.

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Did you ever find an answer to this issue? My phone developed the same problem yesterday.

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I have the same problem with a replacement screen. Did you find any solution?

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Have you found what was causing this?

I’ve the same issue, replaced the lcd on a xiaomi mi a1 and the backlight is present at the logo startup but completely black after that.

On a dark room I can barely see the screen and all it’s working, but adaptive light button is missing, seems like the bootloader is able to use the backlight but not android itself

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I’d try to disable the “adaptive brightness” feature under settings->display, but I highly doubt that this can solve an issue like this.

On the software side there should be restrictions in place to how dim the screen can get and I’ve never even heard of the software having the permission to turn the backlight off.

The only suggestion then would be to replace the screen, but since the backlight is working upon boot…

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