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Pixel 4 only displays 90fps if the screen brightness is above 75%, but workarounds exist – Android Police, Androidpolice.com

Pixel 4 only displays 90fps if the screen brightness is above 75%, but workarounds exist – Android Police, Androidpolice.com


The Pixel 4 and 4 XL have already been in the hands of reviewers and customers for a while now. With the first real-word reports coming up, we were stunned to see huge discrepancies between battery usage statistics and ominous60 Hz screen refresh rate lock-insfor some people who seemingly couldn’t get the (Hz) ********** (Smooth Display mode) working. A recent finding shines light into the issue: The 90 fps mode is only enabled with a screen brightness higher than 75%.

AReddit user noticedhis Pixel 4 turned off Smooth Display at this arbitrary threshold when they monitored logs via ADB. Our own Artem Russakovskii andXDA Developer’s Mishaal Rahmancould confirm this with their phones.

Holy crap. Google Pixel 4 changes between 60 Hz and 90 Hz based on screen brightness.https://t.co/J6J2SjNBEw

I tested using ADB and logcat.

If brightnessIf brightness>=75%, display id=1.

– Mishaal Rahman (@MishaalRahman)October 23, 2019

Luckily, there are workarounds. The simplest method is heading toSettings>System>Developer optionsand looking for a “force 90 Hz “option that does just what its name implies. (If you haven’t activated Developer options already, you first need to go toAbout phoneand tap the build number five times.) You can also use Mishaal Rahman’sTasker recipe. It adds a Quick Settings tile to your notification shade that lets you quickly turn on and off the “force 90 Hz “option without heading to Settings each time. It’s also possible to change the 75% threshold to any otherwhen you have root access. Remember that sticking with 90 Hz for extended periods of time might reduce the already abmysal battery life, though.

Left:Display refresh rate above 75% brightness according totestufo.com.Right:Refresh rate below 75% brightness.

It’s unclear why Google decided to add this limitation to the 90 fps mode. It might be a battery saving option, as you’re notas likely to notice the difference between 90 fps and 60 fps on lower brightness levels. This theory is supported by the fact that the Pixel 4 does enable 90 Hz mode below the 75% display brightness thresholdwhen it senses bright ambient light, which is when it’s more likely that you’ll notice the difference, too.

Still, positioning the cutoff at 75% seems harsh in this context, as phone displays often don’t get that bright indoors. At least we can pinpoint the problem now and there are options to mitigate it, but it still seems like an arbitrary limitation.

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