Screen flickering in auto brightness

[prem726]

From the day i bought my phone the screen flickers in auto brightness mode only in darkness, it works fine during the day. When i set the brightness to low then it stops but when i switch it to auto brightness and sit in the dark it starts flickering.What should i do guys?

 

[Rakeshlumia]

From the day i bought my phone the screen flickers in auto brightness mode only in darkness, it works fine during the day. When i set the brightness to low then it stops but when i switch it to auto brightness and sit in the dark it starts flickering.What should i do guys?

Facing the same problem flickers in auto brightness mode//is this a bug or has to get replaced with new phone? Any thoughts on this ???

 

[hacer619]

I got my screen replaced at nokia care but problem persist. I guess it's a bug because before GDR1 update the problem didn't exist.

 

[Sanket Vaghasia]

Same thing happens on my lumia 520. Is this a hardware bug or software one? The screen works just fine in low/med/high brightness modes.

 

[HyperMatrix]

I have the same issue with my Lumia 1520. I believe this is due to a PWM backlight. Most light sources, including your house hold light bulbs, work by flickering on/off at an extremely high rate that your eye can't see. What a PWM backlight does, is that it controls the total light emitted by lowering the number of light on cycles per second. Less cycles, less light. Follow me so far? Lets say, hypothetically, that a light bulb flashes on/off 1000 times a second. If you were to reduce the light output to 10% of normal, the light on/off cycle would happen just 100 times per second. So what it all comes down to is how low the brightness is set to, and how sensitive your eyes are. I think the minimum brightness allowed with the ambient light sensor on automatic is a bit too low, causing visible problems for many people.

As such, this can be corrected by software. By either giving us better controls over manual brightness adjustment instead of low/medium/high as the low is too bright! And also increasing the minimum brightness level of the backlight, so even in dark areas it still pulses at a higher rate so as to not cause notices le flickering. This of course means a slightly brighter display late at night. But I think its worth it to stop the annoying flicker.

Hope this helps guys.