this post was submitted on 17 Sep 2023
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Android Memes

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[–] trafficnab@lemmy.ca 1 points 1 year ago (3 children)

Wait, aren't most phones OLED? Wouldn't it be trivial to light up a few pixels in the corner of the screen when it's off? Do phones not do this (I'm still running my S7 into the ground so I have a dedicated LED)?

[–] DrM@feddit.de 2 points 1 year ago* (last edited 1 year ago) (2 children)

It's not trivial. An LED only needs power to light up, an OLED Pixel always needs the GPU to be powered on and it would be a significant power loss to implement a pixel sadly

[–] trafficnab@lemmy.ca 2 points 1 year ago (1 children)

The full Always On Display (which shows the clock + some notifications) uses less than 1% battery per hour on my ancient S7, are new phones not any better than that?

[–] WhoRoger@lemmy.world 1 points 1 year ago

It doesn't if the screen is connected directly to the frame buffer which can refresh independently. Whether that's actually implemented this way in hardware, well who knows, but I suspect it is as that's useful to display any static image. Then just power up the display driver for a microsecond to refresh the image if needed.

I mean there's a ton of phones that have always on displays (AOD)

[–] soggy_kitty@sopuli.xyz 1 points 1 year ago

I have my always on display which gives me icons of the notifications in a predictable place on screen all the time.

My battery still lasts a full day so power concerns not an issue

[–] morrowind@lemmy.ml 1 points 1 year ago

yeah samsung has a feature for this in good look