Backlight only works during startup

Question

Xiaomi Mi A2

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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Ryan Storey @ryanstorey28749

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1

게시일: 2019년 2월 4일

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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.

Chris Robbins 의 2020년 12월 4일

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

Jan Buchar 의 2019년 9월 8일

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

Horror Coder 의 2021년 10월 11일

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Did you ever find an answer to this issue? My phone developed the same problem yesterday. — Chris Robbins
I have the same problem with a replacement screen. Did you find any solution? — Jan Buchar
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 — Horror Coder

Florian Koch @pawgsy 평판: 1 1 · Answer 1 · 2019-08-18T10:47:18-07:00

Florian Koch @pawgsy

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게시일: 2019년 8월 18일

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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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Xiaomi Mi A2

Backlight only works during startup

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