Develop Bugs

Will lowering resolution increase battery life?

The settings allow you to lower the resolution. I lowered the resolution to 2340 x 1080 and I don't really notice anything different.... Would this increase battery life? If so, how much?

It will definitely increase battery life.
How much will it increase depends on your usage and your apps installed. It should at max give you 10% increase.

id3alistic said:
Would this increase battery life? If so, how much?
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It is well and widely known that lowering resolution won't give you increased battery life. At all

Ah thanks. I come from an xperia z3 so been using FHD screens only. I was interested in the XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved a lot more battery vs the XZ1 at 1080p.

id3alistic said:
Ah thanks. I come from an xperia z3 so been using FHD screens only. I was interested in the XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved a lot more battery vs the XZ1 at 1080p.
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I think the misconception is lowering the screen resolution vs a device that maxes out at a lower resolution. Maybe it makes a difference for OLEDs...but for LCD screens, all if the pixels are still illuminated, so there's not much difference there.

AarSyl said:
I think the misconception is lowering the screen resolution vs a device that maxes out at a lower resolution. Maybe it makes a difference for OLEDs...but for LCD screens, all if the pixels are still illuminated, so there's not much difference there.
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Sounds convincing and makes sense. I wonder why they'd allow it on this device though?

20degrees said:
Sounds convincing and makes sense. I wonder why they'd allow it on this device though?
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Because Samsung's can do it.
Nothing but hype for the misinformed and ill-advised.
[Dopey voice]"Bruh...look what my phone can do to save battery life. Can yours?" [/Dopey voice]

Using lower resolutions use less power bc they use less gpu computational power. Youre not saving anything really from the screen itself. Think of it this way does your computer/laptop use more power running resource intensive applications or running idle?

id3alistic said:
Ah thanks. I come from an xperia z3 so been using FHD screens only. I was interested in the XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved a lot more battery vs the XZ1 at 1080p.
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As one said here it's from misinformed people.
id3alistic said:
XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved.
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Not that the resolution that saved power. If Sony could put their 3840x2160 resolution display into 4.3" size of XZ1 compact it still would run longer on battery than any 6.5" sized phone from similar battery even with 720p display. Because it's sheer size of screen that saves battery, not the resolution. 4.3" vs 6.5" is hefty difference. One needs more light to make 6.5" display emit light than to make 4.3" one hence one need more power.
Think about it this way, if resolution would matter then XZ Premium and XZ2 Premium would drain their batteries in a matter of minutes with 3840x2160 res displays. Right? But they work almost as long as say Galaxy S9 Plus or Note 8.
---------- Post added at 07:58 PM ---------- Previous post was at 07:52 PM ----------
Nirrik said:
Think of it this way does your computer/laptop use more power running resource intensive applications or running idle?
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It not works like that. When your phone renders picture in 720p or 1080p it doesn't do it sitting idle. It still consumes power when rendering picture 60 times a sec. And its GPU still runs at 200MHz, maybe it needs like 230 or 250MHz for rendering picture in 1440p but is 250MHz vs 200 MHz a huge difference? I doubt it
It's not like 1440 picture rendering needs full GPU power but 720p or 1080p can be powered by idle GPU. Never was, never will. Ask devs in http://forum.xda-developers.com/android/software-hacking if in doubt

In reality ability to pick your resolution for battery life is a gimmick and doesn't really do anything.
There were no proofs that phones live longer from same charge when it's resolution lowered. Maybe it works for constant gaming, like playing games in 720p on a 1440p screen will bump battery life. But in other cases no

Taking only power consumption from the display alone, there is no different between HD, FHQ, QHD. The different is that if a game or any apps(or even system app itselfs) runs at HD, it will need less graphic computational power than running at QHD (once again, its not about the drainage from the display, its from GPU).

romeokk said:
The different is that if a game or any apps(or even system app itselfs) runs at HD, it will need less graphic computational power than running at QHD (once again, its not about the drainage from the display, its from GPU).
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in reality, it's bull****. learn how GPU works. Try to ask Google devs if you don't know. They do habitate here, at XDA
It's not like it renders something and then goes to sleep turning cores off as CPU does. Instead GPU renders frame 60 times a sec and uses 203MHz either your resolution is 720p or 1080p. It can't lower frequency to 100MHz magically because it's not designed that way. So it consumes as much power working at 203MHz either rendering 720p frames or rendering 1080p frames.
Hence no battery economy achieved

Billy Madison said:
in reality, it's bull****. learn how GPU works. Try to ask Google devs if you don't know. They do habitate here, at XDA
It's not like it renders something and then goes to sleep turning cores off as CPU does. Instead GPU renders frame 60 times a sec and uses 203MHz either your resolution is 720p or 1080p. It can't lower frequency to 100MHz magically because it's not designed that way. So it consumes as much power working at 203MHz either rendering 720p frames or rendering 1080p frames.
Hence no battery economy achieved
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See this:
https://www.google.co.th/url?sa=t&s...FjADegQIBRAB&usg=AOvVaw3qEXVbk4h0XmHcDhhRUR1P

terrible performance with exynos is it just me?

having used the note 10+ for a day or so i can safely say that the performance is pretty bad, it feels sluggish and some demanding wallpaper apps actually lag
this app for example sometimes slow down to a crawl what feels like 5 fps https://play.google.com/store/apps/details?id=com.maxelus.motionlivewallpaper
it's corrected by going to settings and changing from 60 fps to 50 fps but then it slows down again, i know this wallpaper is demanding but this is not acceptable on a 1100 smartphone

Well, I have had issues with various live wallpapers in the past, I dont know why, but live wallpapers do not work equally across devices, more to it, sometimes some lwp work fine for a while, then stop working at all, I went to playstore to check this lwp, and there others complaining about an update that made the lwp worst, I think the problem is not exynos related

zzcool said:
having used the note 10+ for a day or so i can safely say that the performance is pretty bad, it feels sluggish and some demanding wallpaper apps actually lag
this app for example sometimes slow down to a crawl what feels like 5 fps https://play.google.com/store/apps/details?id=com.maxelus.motionlivewallpaper
it's corrected by going to settings and changing from 60 fps to 50 fps but then it slows down again, i know this wallpaper is demanding but this is not acceptable on a 1100 smartphone
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I agree im dissapointed it feels very sluggish to the point i am considering to sell asap..

Thats why snapdragon is a better option

Isn't the exynos chip not better then snapdragon? I read somewhere that the Exynos chip is a tad more powerful then then snapdragon although barely noticeable

I have no issues with exynos.

Mine is fine.

Mines fine too, compared to my S10+ battery life is a good improvement, speed is similar

Question Is LTPO 3.0 safe for eyes ? What PWM frequency is Vivo X80 Pro using ?

This may seem too obvious but think about it. Turning on show refresh rate option shows you a continuously changing refresh rate 10-24-30-60-120 Hz . LTPO can bring down the refresh rate to 10Hz but that constant switching between refresh rates may be adding flickers not consciously noticeable but may have an effect on the eyes in long term ?
This is to save the battery but can eyes adapt to a such a high degree of variable refresh rate ? Does anyone know the PWM frequency of Vivo X80 Pro LTPO 3.0 ? I did check with a slo-mo camera and it does show flicker (black lines moving across the screen). Honor 4 Pro is claiming a LTPO screen with highest ever PWM frequency for eliminating flicker. Any insight into this will be much appreciated.

Narendra_B said:
This may seem too obvious but think about it. Turning on show refresh rate option shows you a continuously changing refresh rate 10-24-30-60-120 Hz . LTPO can bring down the refresh rate to 10Hz but that constant switching between refresh rates may be adding flickers not consciously noticeable but may have an effect on the eyes in long term ?
This is to save the battery but can eyes adapt to a such a high degree of variable refresh rate ? Does anyone know the PWM frequency of Vivo X80 Pro LTPO 3.0 ? I did check with a slo-mo camera and it does show flicker (black lines moving across the screen). Honor 4 Pro is claiming a LTPO screen with highest ever PWM frequency for eliminating flicker. Any insight into this will be much appreciated.
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Honor has 1920PWM if i remember correctly, idk how much the vivo has.
But i'll break you a myth, the LTPO does NOT improve performance unless you maybe watching YouTube all day and even so.
So far all the smartphones that has poor battery life, including the x80 Pro, has LTPO.
Based on my use, i just use the 120hz and it goes down to 10hz when possible, coming from the Mate 40 Pro which has 60 or 90 only with no LTPO, the Mate 40 Pro had better battery life.
They is no eye strain with either of them if you sit in the proper angle, i haven't noticed anything anyway.

Derpling said:
Honor has 1920PWM if i remember correctly, idk how much the vivo has.
But i'll break you a myth, the LTPO does NOT improve performance unless you maybe watching YouTube all day and even so.
So far all the smartphones that has poor battery life, including the x80 Pro, has LTPO.
Based on my use, i just use the 120hz and it goes down to 10hz when possible, coming from the Mate 40 Pro which has 60 or 90 only with no LTPO, the Mate 40 Pro had better battery life.
They is no eye strain with either of them if you sit in the proper angle, i haven't noticed anything anyway.
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Thanks for replying. Firstly Congratulations for your ROG6 phone . LTPO may be saving a little bit of battery but there are many other factors especially SD Gen 1.
But I am worried about LTPO's constantly varying refresh rate. In my 2 months of usage of X80 Pro I had two or three episodes of headache which may be very well be coincidental due to other factors. It did prompt me to research more on PWM frequency of X80 pro and what effect does LTPO have on eyes.

Narendra_B said:
Thanks for replying. Firstly Congratulations for your ROG6 phone . LTPO may be saving a little bit of battery but there are many other factors especially SD Gen 1.
But I am worried about LTPO's constantly varying refresh rate. In my 2 months of usage of X80 Pro I had two or three episodes of headache which may be very well be coincidental due to other factors. It did prompt me to research more on PWM frequency of X80 pro and what effect does LTPO have on eyes.
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That's a good point that no reviewer actually checked or researched.
I had the X80 pro for a month and never had any headache, you might be sensitive to certain PWM frequency.
If you can check the Honor Magic 4 Pro you might deny or confirm that.

Derpling said:
That's a good point that no reviewer actually checked or researched.
I had the X80 pro for a month and never had any headache, you might be sensitive to certain PWM frequency.
If you can check the Honor Magic 4 Pro you might deny or confirm that.
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I have no way to check magic 4. Also , I did not find a way to force 60 or 120 Hz on X80 pro. Tried adb command and SetEdit. At least locking it to 60Hz minimum will be good enough even though it defeats the purpose of LTPO.
Does anyone know how to do that ?

Narendra_B said:
I have no way to check magic 4. Also , I did not find a way to force 60 or 120 Hz on X80 pro. Tried adb command and SetEdit. At least locking it to 60Hz minimum will be good enough even though it defeats the purpose of LTPO.
Does anyone know how to do that ?
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It should be under the display settings>refresh rate.
Don't choose Auto, choose 120hz, and it will be 120hz all the time unless there is no motion on the screen.

Derpling said:
It should be under the display settings>refresh rate.
Don't choose Auto, choose 120hz, and it will be 120hz all the time unless there is no motion on the screen.
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Choosing a refresh rate in settings just sets the maximum refresh rate. I would like it to be at least 60Hz at all times which happens in all non-LTPO phones .

Narendra_B said:
Choosing a refresh rate in settings just sets the maximum refresh rate. I would like it to be at least 60Hz at all times which happens in all non-LTPO phones .
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If you trigger the "show refresh rate" at the developer menu, you'll see it drops from 120hz to 10hz quite often.
Even if you'll force 60hz it will drop to 10hz, that's just how it works.
I don't think you can put a threshold of 60hz as minimum as opposed to 10hz.

Derpling said:
If you trigger the "show refresh rate" at the developer menu, you'll see it drops from 120hz to 10hz quite often.
Even if you'll force 60hz it will drop to 10hz, that's just how it works.
I don't think you can put a threshold of 60hz as minimum as opposed to 10hz.
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Right. That's how LTPO works but in other phones , it will stay at 60Hz even if it is static picture. The flicker at 10Hz could be more than 60Hz unless the PWM frequency is high enough. Am I getting it right ?

Narendra_B said:
Right. That's how LTPO works but in other phones , it will stay at 60Hz even if it is static picture. The flicker at 10Hz could be more than 60Hz unless the PWM frequency is high enough. Am I getting it right ?
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Indeed.
But Vivo hasn't published information about the PWM frequency, so we're in the dark for now.

There is a new Notebookcheck analysis of X80 pro, but the frequency is pretty low
Vivo X80 Pro smartphone review: Primus camera with huge fingerprint sensor
In our review, the Vivo X80 attempts to impress with a quad camera, Snapdragon 8 Gen 1, ample storage, fast charging and probably the largest, fastest and most versatile fingerprint sensor.
www.notebookcheck.net

Derpling said:
If you trigger the "show refresh rate" at the developer menu, you'll see it drops from 120hz to 10hz quite often.
Even if you'll force 60hz it will drop to 10hz, that's just how it works.
I don't think you can put a threshold of 60hz as minimum as opposed to 10hz.
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I am on W30 funtouch OS 12.0.12.12 and I noticed that Show Refresh Rate is now showing 120 Hz all the time if 120 Hz is selected in settings. Even Youtube is at 120 Hz which is great. Even in Smart switch mode the refresh rate only toggles between 60 Hz and 120 Hz . In essence LTPO has stopped working and I did not notice battery drainage as such so I am happy also due to concerns on LTPO safety on eyes and the phone feels fast irrespective of whether an app supports 120 Hz or not

Question Any way of forcing the screen to 120 Hz?

Hey, so I bought this phone around a week ago and while I love its hardware, I'm having real trouble getting it to move smoothly.
Specifically, I noticed that the screen drops to 60 Hz or less in many apps (confirmed through developer options), slowing down things like the drop-down menu as well. Now I understand that YouTube and most apps do not support more than 60 Hz: however, I do not understand why the phone slows down the scrolling and the notification menu as well. I previously had a One Plus 7 Pro that remained buttery smooth in the menus, even when running YouTube.
Is there a way to force the screen to 120 Hz for Vivo phones? I have tried a lot of the options which work for other brands (tried Setedit, ADB commands, SmartHertz etc), yet they do not do anything on the X80 Pro.
Did anyone manage to force the refresh rate in any way on this phone or on another recent Vivo phone? I haven't been able to find much for X80 Pro specifically.

None so far, and all the apps support 120hz unless coded differently.
On mine ROG6, ALL apps works at ALL the refresh rates, on the vivo however, Youtube and spotify stuck on 60hz no matter what, it's purely Vivo's fault and i hope they'll fix it in the upcoming updates.

I hope they fix it soon as well, my Vivo is laggier than a midrange phone in daily use, despite having stellar hardware and great results in benchmarks. Certainly didn't expect that lol.

valiiii4 said:
I hope they fix it soon as well, my Vivo is laggier than a midrange phone in daily use, despite having stellar hardware and great results in benchmarks. Certainly didn't expect that lol.
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Yeah me neither, still shocked how slow it is compared to any phone, actually.

Derpling said:
Yeah me neither, still shocked how slow it is compared to any phone, actually.
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I am on W30 funtouch OS 12.0.12.12 and I noticed that Show Refresh Rate is now showing 120 Hz all the time if 120 Hz is selected in settings. Even Youtube is at 120 Hz which is great. Even in Smart switch mode the refresh rate only toggles between 60 Hz and 120 Hz . In essence LTPO has stopped working and I did not notice battery drainage as such so I am happy also due to concerns on LTPO safety on eyes and the phone feels fast irrespective of whether an app supports 120 Hz or not

I had to choose 120 Hz specifically, when I used "Auto" mode it was down to 60 Hz in e.g. Chrome/Brave. Now it's 120 Hz there. Only app I can see with 60 Hz are games and youtube.

Latest SmartHertz version now supports manual modes, maybe with forced mode it will work on Vivo. Try it!

Question S21fe - Green glow

Hello, is the phone still having problems with the green screen in low brightness? As is the case with the s20 series?

adek89 said:
Hello, is the phone still having problems with the green screen in low brightness? As is the case with the s20 series?
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I did not encounter a problem like that (snap version).

KlemenC said:
I did not encounter a problem like that (snap version).
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and what does the issue of overheating look like? instagram, browser, yt?

adek89 said:
and what does the issue of overheating look like? instagram, browser, yt?
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no overheating problems...
It is true that i have debloated it, and have most apps on deep sleep (except mail and few other), so i limit background activity.
I also use "galaxy max hz" mod so i can force low refresh rate and batery saving on screen off.

Thank you very much. I'm thinking about s20fe and 21fe. However, when I watch yt and see what are the temperatures or the results on the battery, it rejects me a bit

I understand. I moved to s21 FE from upper mid range galaxy a8 (2018). I i would say that battery efficiency on s21 fe is a bit lacking. I am not a power user so with the old phone i needed to charge oproximately every 5 days. With this one optimised as best i could i reach 3 days, maybe 4. I know that it has bigger screen and faster refresh rate and those things impact battery life a lot, but i would say that snap 888 has an inefficient standby or the low power cores are still too power hungry for my taste...
Don't get me wrong i love the phone, and am happy that i switched. The main reason for me was getting an upper range camera sistem at a low as possible price, and i bought the phone through a samsung trade in program. Also in europe it is realy hard to get any galaxy phone with a snapdragon procesor...
Hope this helps you in deciding.