DPI & Screen Resolution - Huawei P30 Pro Questions & Answers

Hi guys i want ask does lower or higher DPI increase battery life and does anyone notice any difference in performance ir battery btw what about resolutions i read few websites about that but anway need your answer does affect performance or battery life if i use lower or higher resolution Thanks all for answer

blinkt88 said:
Hi guys i want ask does lower or higher DPI increase battery life and does anyone notice any difference in performance ir battery btw what about resolutions i read few websites about that but anway need your answer does affect performance or battery life if i use lower or higher resolution Thanks all for answer
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No, on the grounds that DPI implies specks made by pixels in screen in the event that you bring down the DPI just picture sharpness will get diminished and yet same measure of battery will be utilized by screen. So bringing down DPI won't decreases the battery utilization yet you can make brilliance and brightness low. However you can control and calculate DPI you need according to your screen resolution.

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[Q] underclocking

Hi i have an idea for better battery durability and reduce the heat emitted.i want to change the processor's clock speed.
I think that 1-1.2 ghz is enough for good performance but i don't have rooted my phone yet so could anyone try to change the clock speed and wrote what about the battery drain and heat emitted by cpu?
Thanks!
ebreo said:
Hi i have an idea for better battery durability and reduce the heat emitted.i want to change the processor's clock speed.
I think that 1-1.2 ghz is enough for good performance but i don't have rooted my phone yet so could anyone try to change the clock speed and wrote what about the battery drain and heat emitted by cpu?
Thanks!
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I'm so glad that you had that idea, because nobody else has EVER thought about doing that
How about you search the forum and look at one of the many, many threads where this sort of thing is discussed instead of asking us to write the same thing over and over again :banghead:
i didn't find anything about that if you can pls share link with those threads or whatever like this
check this out - http://forum.xda-developers.com/showthread.php?t=1854008
Here you got my experience - http://forum.xda-developers.com/showpost.php?p=35517636&postcount=30
ok thanks @danie.wro i have read whole topic and i guess does it this app useful?
i want use all 4 cores but clocking down theirs cores to 1gzh or 1.2ghz in term of battery saving and heat will be change anything for sure?
another question is regular that overnight my phone lost about 15-20% of battery doing nothing?
Try to use CPU-Tuner. I use that and it's very useful.
thanks you too, but this app is for rooted phone instead gearbox runs on no rooted phone too i tried quadrant benchmark and i had lower score, let we see if this change something in term of battery drain and heat emitted xD
ok i have tried and i have positive feelings the battery withstand more time about 15-20% with clock speed set on 1ghz and 4 cores, and power saver with 1 core on 1ghz, but the heat emitted by battery hasn't changed much...
I have a question does NFC take a lot of power?
ebreo said:
ok i have tried and i have positive feelings the battery withstand more time about 15-20% with clock speed set on 1ghz and 4 cores, and power saver with 1 core on 1ghz, but the heat emitted by battery hasn't changed much...
I have a question does NFC take a lot of power?
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I'm guessing by the facts that it has a lower signal range than Bluetooth it uses less power than Bluetooth but still is a considerably big battery consumer.

CPU undervolting concept and results

This is an outdated device, but since SD801 is so efficient, I gave it a try.
Warning - undervolting is a risky process. It may constantly crash your device, make it unusable or you can actually lose all of your data. Be aware.
So, after reading various articles about CPU binning concept, I thoroughly examined my device's potential. Note, that every device is different, regarding CPU quality and etc.
Anyways, I am running stock rom with Boeffla kernel. I actually gave up, when my device was getting hot - I don't like that at all. Since thermal throttling is really aggresive, I wanted to get away from that completely. And I did.
Currently my phone is heavily undervolted (by 0.1V to be exact) and to be honest, CPU temperatures now never ever exceed 50ºC. With stock voltages, I could easily reach 80ºC.
Anybody else tried doing undervolting? Share your experiences. I would greatly appreciate that.
what is the benefit of it?
does it give a better battery life............?
binadam23 said:
what is the benefit of it?
does it give a better battery life............?
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The only real benefit of undervolting is to reduce temps. Even so it isn't recommended because of the risk of instabilities.
Saber.
Saber said:
The only real benefit of undervolting is to reduce temps. Even so it isn't recommended because of the risk of instabilities.
Saber.
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lower temperature = lower power consumption = better battery life.
Kriomag said:
lower temperature = lower power consumption = better battery life.
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Not necessarily. In my experience in kernels, undervolting only brings marginal power savings. Most battery drain is from open apps and from the display.
Saber.
Wake locks play a big role too I always turn off as may features as I can on my s5 verizon and settings database editor App to turn off more features than normally possible
Sent from my iPhone using Tapatalk
Saber said:
Not necessarily. In my experience in kernels, undervolting only brings marginal power savings. Most battery drain is from open apps and from the display.
Saber.
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Not exactly marginal from my experience. It also depends on which frequency CPU is running. At higher clocks, lower power consumption is more noticeable than on lower frequencies.
airidosas252 said:
Not exactly marginal from my experience. It also depends on which frequency CPU is running. At higher clocks, lower power consumption is more noticeable than on lower frequencies.
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Well, that's not quite the same as what I was saying.
Different CPU frequencies use different current levels which will affect the power draw. So in this case, it will affect the battery savings. Whereas undervolting alone doesn't bring much of a difference due to the already efficient design of our SOC (well, at least in my case ).
Saber.
Undervolting -> Lower Temp -> Less Throttling -> Better Performance with slightly better battery life.
Sent from my SM-G900F using XDA Labs
Throttling is really noticeable with stock voltages. Play some games for a while and you'll start to feel that phone is getting slower and hotter. Not the case anymore after undervolting. If your phone can handle upto 0.1V undervolt, then your SOC is in good shape.
Wlld1 said:
Undervolting -> Lower Temp -> Less Throttling -> Better Performance with slightly better battery life.
Sent from my SM-G900F using XDA Labs
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i can confirm this, i feel my phone is really snappy now and slightly worm, not hot anymore
I use 300-2000Mhz and heavy UV 620-850V. I also use "use_spi_crc=0".
After phone reboot on stock i get 80'C (cpu tem module in xposed) and on my settings it is not reaching 60'C
What about battery life? it needs long testing, i can assume that its slightly better because less energy is converted in to heat
There seems to be some misconception on undervolting.
In theory undervolting should translate to better battery life. However....
Real world results tell a different story as it shouldn't really make much difference at all. For example, not all S5 phones run the same voltage tables (different CPU quality require more/less voltage), yet they achieve the same battery life. So what voltage was set by the manufacturer (Samsung) is already the optimum voltage.
You will definitely achieve better thermals after undervolting, but in the custom kernel world, most kernel developers will not be able to provide help in the case of instabilities. Some kernel developers may not even provide undervolting support because there just isn't a great enough benefit other than improving thermals.
Saber.
What about undervolting Busses, Image processing System, MMC Memory, GPU and CPU?
I`ve got the exynos variant of the S5. I undervolted to -85 all of that stuff and the phone now doesn't heat at all and battery life isn't that amazing but it is noticeably better
Rudy1967 said:
What about undervolting Busses, Image processing System, MMC Memory, GPU and CPU?
I`ve got the exynos variant of the S5. I undervolted to -85 all of that stuff and the phone now doesn't heat at all and battery life isn't that amazing but it is noticeably better
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I'm using the snapdragon variant with boeffla kernel so only the CPU is allowed to be undervolted.
Undervolting other components alongside the CPU will make a more noticeable difference in terms of battery savings. It still isn't recommended by many kernel devs as these other components are more sensitive to slight voltage changes (including the bus).
Saber.
Saber said:
I'm using the snapdragon variant with boeffla kernel so only the CPU is allowed to be undervolted.
Undervolting other components alongside the CPU will make a more noticeable difference in terms of battery savings. It still isn't recommended by many kernel devs as these other components are more sensitive to slight voltage changes (including the bus).
Saber.
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Yeah it actually makes a slight difference in battery life, But I don't think anyone should go below these values since I started to get Screen of death and all that kinda stuff that happens when phones are very undervolted haha
If there's a kernel that allows users of Snapdragon phones to undervolt that hardware, I really recommend you to do it, it really helps battery's performance if you need that extra hour of Screen On time
Now, all of this changes are not recommended cause there could be problems with your phones if you're not sure bout the parameters you're playing with.
does anybody else have problem with gpu oc ? no matter what settings i use there is no performance increase at all, its like the 600Mhz is permanent even when all monitoring programs show 700-800Mhz :/ I have tested gpu many times using 3dmark - always the same fps (600-800Mhz). With 200Mhz increase in frequency it should be significant increase in fps!

Lower Resolution for Better Battery ?

Hi guys
I was pondering weather or not to lower the resolution on my Nokia 8 in the favour of a better life? Has anyone made an attempt ? You think it will make a difference ? You can do it with with root and without apparently. Food for thoughts, ideas comments are all welcomed.
AthanC said:
Hi guys
I was pondering weather or not to lower the resolution on my Nokia 8 in the favour of a better life? Has anyone made an attempt ? You think it will make a difference ? You can do it with with root and without apparently. Food for thoughts, ideas comments are all welcomed.
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I've done it/am doing it.
Day to day there isn't much increase in battery life (that I noticed anyway).
I game a fair bit though and have noticed the battery lasts a bit longer with the display set to a lower resolution.
I haven't measured/documented any of this so your milage may vary.
ajgftw said:
I've done it/am doing it.
Day to day there isn't much increase in battery life (that I noticed anyway).
I game a fair bit though and have noticed the battery lasts a bit longer with the display set to a lower resolution.
I haven't measured/documented any of this so your milage may vary.
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How are you doing it?
bordi21 said:
How are you doing it?
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https://forum.xda-developers.com/nokia-8/how-to/change-display-resolution-2k-to-fhd-t3836974

90Hz refresh rate is a battery drainer!

The 90 Hz refresh rate seems to be taking a toll on the batterylife of OnePlus 7 Pro even when equipped with a 4000 mAh battery.
As MKBHD reviews , 4 and half hr of SOT is definitely not great. (Skip to 06:37)
Just wait for more reviews.
the review of the verge stated completely the opposite. Battery life depends so much on the use.. Keep wifi on with mobile data, gps and everything and it drops way faster. Keep a bit of attention what to keep on, lower the brightness just 10% and you get easiliy a screen on time more.
Tiz92 said:
Just wait for more reviews.
the review of the verge stated completely the opposite. Battery life depends so much on the use.. Keep wifi on with mobile data, gps and everything and it drops way faster. Keep a bit of attention what to keep on, lower the brightness just 10% and you get easiliy a screen on time more.
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How to well setup the phone to get good batterylife I'm well aware. , it's just that no one should be compelled to turn this phone into a dumbphone to get good batterylife as the refresh rate is not downgradable.
Let's hope more and more reviewers/users do not get similar results like Marques. :good:
*edit: Refresh rate is downgradable to 60Hz.
Virgo_Guy said:
How to well setup the phone to get good batterylife I'm well aware. , it's just that no one should be compelled to turn this phone into a dumbphone to get good batterylife as the refresh rate is not downgradable.
Let's hope more and more reviewers/users do not get similar results like Marques. :good:
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Click to collapse
You can turn to 60 hz in the settings and also 1080p. So you can get better battery when needes.
Look at other reviews.. 7-8 hours SOT.. MKBHD always gets low SOT.. he uses max screen brightness, 10000 notifications a day...
Tiz92 said:
You can turn to 60 hz in the settings and also 1080p. So you can get better battery when needes.
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My bad, I heard CAN as CAN'T :silly: in that video at 07.20, thanks for the correction. But then downgrading to 60Hz should not be considered as "the solution" as 90Hz is what separates the screen from others.
ram4ufriends said:
Look at other reviews.. 7-8 hours SOT.. MKBHD always gets low SOT.. he uses max screen brightness, 10000 notifications a day...
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True that MKBHD always gets low due to his "usage".
We also see that, he gets more batterylife in phones like S10+, way more in P30 Pro etc..so OP7 Pro's endurance would mostly fall below those chart toppers - should suffice most users.
Virgo_Guy said:
My bad, I heard CAN as CAN'T :silly: in that video at 07.20, thanks for the correction. But then downgrading to 60Hz should not be considered as "the solution" as 90Hz is what separates the screen from others.
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It is a solution though. It's eating the battery more so if you want better Battey life you have to downgrade.
worldsoutro said:
It is a solution though. It's eating the battery more so if you want better Battey life you have to downgrade.
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That's a "workaround" at the cost of sacrificing the USP of the product itself- OnePlus has been so hyping and bragging about.
So you buy a 90hz phone but use it at 60hz to save battery haha. I remembered the old days when ppl buy a car they want a $2000 ac option but rarely use it because the car wont last long
In one review it was said that Oneplus is currently working on an adaptive refresh rate (and probably also resolution), which would lower it automatically when unnecessary: For example, if you watch a youtube video thats 20min long you don't need the 90Hz as you'll barely touch the screen and there is no 90Hz content. That would be the ideal solution.
It might, but I am sure the optimization of the OXYGEN system will handle that perfectly!
Harry Pothead said:
In one review it was said that Oneplus is currently working on an adaptive refresh rate (and probably also resolution), which would lower it automatically when unnecessary: For example, if you watch a youtube video thats 20min long you don't need the 90Hz as you'll barely touch the screen and there is no 90Hz content. That would be the ideal solution.
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1. It's the "possibility" of a "Dynamic Refresh Rate" OnePlus is working on to push via software update and only FUTURE will tell.
2. "Dynamic Resolution" is the other measure in which, having the screen resolution at full resolution most of the time, it automatically scales down the resolution to 1080p while playing 1080p content.
*(Both points described on the OP, at 07:45).
Virgo_Guy said:
1. It's the "possibility" of a "Dynamic Refresh Rate" OnePlus is working on to push via software update and only FUTURE will tell.
2. "Dynamic Resolution" is the other measure in which, having the screen resolution at full resolution most of the time, it automatically scales down the resolution to 1080p while playing 1080p content.
*(Both points described on the OP, at 07:45).
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Click to collapse
Whoops, didn't see that youtube link in the OP
"OnePlus 7 Pro vs Samsung S10 Plus / iPhone XS Max / P30 Pro / Xiaomi Mi 9 Battery Life DRAIN TEST" :
Just give the phone a few weeks after some updates im sure op7 pro will be better in terms of battery! the phone just released yesterday guys..calm down
No matter what phone I purchased since the good ole days, "5 years ago" when batteries were replaceable I have never been happy with battery life. Why does everybody who builds devices have to make batteries as thin as possible ? An extra 2 to 3 mm if they can give me an extra few hours before looking for a charge is better that a super slim device. Now even they worst case was true 4 hours screen on time, I rarely use my phone four hours a day, the battery life should be fine.
Virgo_Guy said:
1. It's the "possibility" of a "Dynamic Refresh Rate" OnePlus is working on to push via software update and only FUTURE will tell.
2. "Dynamic Resolution" is the other measure in which, having the screen resolution at full resolution most of the time, it automatically scales down the resolution to 1080p while playing 1080p content.
*(Both points described on the OP, at 07:45).
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Click to collapse
If this is anything like their Adaptive Battery on the 6T....forget it..it won't work worth garbage...haha
techlogik said:
If this is anything like their Adaptive Battery on the 6T....forget it..it won't work worth garbage...haha
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Adaptive battery somewhat works in my Galaxy S10 Plus I believe.
When it comes to OP, only time will tell about that "Dynamic refresh rate" ...these terms though ? reminded me of "Intelligent Pixel Technology" with the OP5T's secondary camera and it was anything but what it was meant for.
...Let's see. ?
I'm averaging about 6 hours SOT but I haven't done anything too intensive. I'll have to wait and see on battery but I haven't been disappointed at all.

High Refresh Rate below 90 Hz a gimmick or really a plus?

Hi lads,
As you are aware the K30 pro just came out and unfortunately, it doesn't have a high refresh rate. The reason given by Xiaomi was that at the time of conception they felt users wanted a better screen and more battery life. Anyways, there are already talks in the community of overclocking the panel to obtain a higher refresh rate. Now my questions are as follows:
Does it make a difference when you go from 60hz to say anything between 70 and 80 Hz? I mean none managed to obtain the minimum set by manufacturers i.e. the 90 Hz. Or is it simply a gimmick whereby we just want to have the latest option just for the sake of saying we have it?
Now in supposing that we can achieve a high refresh rate and that there are noticeable improvements, what about the battery life and the longevity of the screen?
Looking forward to hearing your valuable inputs and don't forget to take proper precautions with the COVID19 and stay safe at home.
We can Overclock the screen using the mods via the apk file.
But it isn't good for the device at all. Obviously, if the OEM could overclock it safely, they would. They haven't for a reason.
To date, no one using the mod has informed us of any side-effects they've experienced.
The mod works, and the device feels smoother (according to them). I don't use OC.
However, all the devs and pros are totally against it with half of the kernels actively blocking the use of overclocking your device with higher refresh rates.
I'd trust their decision.

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