Blue light filter issue

[ihsanul09]

I just buy the brand new galaxy A51. I'm facing a display problem now. The blue light filter doesn't work well. It doesn't work on my lock screen and sometimes I'm facing it on my home screen also. How to fix that?

[Š]

It won't work on lockscreen if Indisplay fingerprint lock is enabled.

[BenBongo]

Thats stupid, it works fine on my old samsung Galaxy s10 on lockscreen.

So you just made it worse.

Just fix it.

[Š]

A series have optical fingerprint scanner, which need an assist of high intensity backlight to lightup finger(The green light we see when scanning fingerprint). That's why blue light filter disabled in lockscreen.
S10 series uses ultrasonic fingerprint sensor, which don't require to light up the finger. So it have no issue in lockscreen.

[fuzzybeing]

That is because s10 plus had the ultrasound fingerprint scanner ...i am facing the same problem after changing to s21 fe from s10+

[Samsung_Support4]

Hi there,

We would like to inform you that the blue light filter won't work on the lock screen. it is only designed to work on home screen of device. However, if it is not working on home screen, then kindly follow the below mentioned steps:

> Perform the reset settings of device (Settings>>General Management>>Reset>>Reset settings)

> Once again enable the blue light filter and then check the issue.

> Run the device in safe mode and check the issue.

> If issue still persists, create data backup and reset the device.
For further assistance, register your concern in Samsung members app(click on “+“icon>send feedback>Error report/ Ask Questions)

Regards,
Team Samsung Members

[ihsanul09]

Thank you @Samsung

[Anonymous]

why you do that, its makes my lock screen wallpaper doesn't look good

[Servant-in-Christ]

Amen. Amen.

[Nelsgreen]

Blue light filter working fine on the lock screen on my Galaxy A3 2017. It's sad you made it worse now. Please fix, thank you.