LED is decided by the manufacturing month.

[vinit99]

I my opinion the LED in our Redmi 4x is decided by the manufacturing month. Maybe new units dont have colour LED inbuilt so they show no effect of fixes. So, just comment below with your manufacturing month along with the type of LED you have now.

FYI- Manufacturing month is written on the box.

 

[supersoft]

Only white led works on my phone. September

 

[vinit99]

Only white led works on my phone. September

Yeah its the manufacturing month.

 

[LonerDarke]

My 4x is 05-2017 and have colored led.

 

[supersoft]

Yeah its the manufacturing month.

Yes and boa screen

 

[vinit99]

Yes and boa screen

Ya they have changed LED and screen type maybe.

 

[leechseed]

Yep
https://forum.xda-developers.com/showthread.php?p=74752340