Develop Bugs

better battery life

I've been using CyanogenMOD 7 and love it (mostly). The one thing I don’t like about it is the short battery life. I'm kind of new to rooting phones so it took me a bit to get it rooted and get CM7 rolling. I was wondering if there are any mods out there like CM7 that have better battery life? Or if there's any thing I can add to CM7 to give it more batter life?
I've been using android since the first phone came out so I’m already knowledgeable in what to turn off to try and extend the battery life, but I have noticed a big decrees in batter since installing CM7.
Thanks for the help guys
Trench

You can under clock the processor when your phone is asleep. This creates better battery life.
Sent from my HTC Vision using XDA App

Have you tried wiping battery stats?

evilcuber said:
You can under clock the processor when your phone is asleep. This creates better battery life.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
your phone automatically underclocks your processor when it sleeps (for most CPU governors), you do not need to tell it to do so.
I'm not picking on you fyi, I'm just making sure we are giving people accurate information... there's only one thing worse than no information: incorrect/incomplete information.
op: which version of CM7 are you running? remember, the more minimal your setup (ie less homescreens, less widgets, manual syncing of gmail and whatever else, etc) the better your battery life will be. this is especially true of newer phones that are getting heftier cpu & gpus that, while intelligent with power consumption, are going to drain even larger capacity batteries relatively quick with moderate/heavy usage.
how long are we talking with battery life? how heavy a user are you? for reference, I get around 16 hours of battery life if I don't charge the phone at all from unplugging to battery dying with moderate to heavy usage (texting ~50 times a day, sometimes up to 100 emails depending on what's happening at work, couple hours of calls, couple hours of streaming music [pandora or audiogalaxy], couple of hours of games [peggle and plants v zombies mostly - both of which are resource hogs], etc).
I have just learned to get used to the fact that the phone is going to die if I use it a lot, so I've purchased three micro-usb cables and a car charger.. that way, unless I'm in an area where there is no charge-capable usb port nearby, I'm always able to get a little more juice if need be.

pmcqueen said:
your phone automatically underclocks your processor when it sleeps (for most CPU governors), you do not need to tell it to do so.
I'm not picking on you fyi, I'm just making sure we are giving people accurate information... there's only one thing worse than no information: incorrect/incomplete information.
op: which version of CM7 are you running? remember, the more minimal your setup (ie less homescreens, less widgets, manual syncing of gmail and whatever else, etc) the better your battery life will be. this is especially true of newer phones that are getting heftier cpu & gpus that, while intelligent with power consumption, are going to drain even larger capacity batteries relatively quick with moderate/heavy usage.
how long are we talking with battery life? how heavy a user are you? for reference, I get around 16 hours of battery life if I don't charge the phone at all from unplugging to battery dying with moderate to heavy usage (texting ~50 times a day, sometimes up to 100 emails depending on what's happening at work, couple hours of calls, couple hours of streaming music [pandora or audiogalaxy], couple of hours of games [peggle and plants v zombies mostly - both of which are resource hogs], etc).
I have just learned to get used to the fact that the phone is going to die if I use it a lot, so I've purchased three micro-usb cables and a car charger.. that way, unless I'm in an area where there is no charge-capable usb port nearby, I'm always able to get a little more juice if need be.
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Click to collapse
but i also mean setting the max sleep to 368mhz. by default its set at 800mhz. sometimes with apps running in the background, the processor may go to 800mhz without you knowing

check out 'powersave' and set your cpu max to 806mhz. should last you a nice long time like that. responsiveness suffers, of course.
'ondemand' and 806mhz is the best comprimise for me. still fine with HDvideo recording, streaming audio, Nav, etc
if you really want to make it last... clock down to 400mhz, turn off all the sync, set brightness and timeout to minimum, all the radios off (airplane mode), and the volume down, on vibrate.
;-)

pmcqueen said:
your phone automatically underclocks your processor when it sleeps (for most CPU governors), you do not need to tell it to do so.
I'm not picking on you fyi, I'm just making sure we are giving people accurate information... there's only one thing worse than no information: incorrect/incomplete information.
op: which version of CM7 are you running? remember, the more minimal your setup (ie less homescreens, less widgets, manual syncing of gmail and whatever else, etc) the better your battery life will be. this is especially true of newer phones that are getting heftier cpu & gpus that, while intelligent with power consumption, are going to drain even larger capacity batteries relatively quick with moderate/heavy usage.
how long are we talking with battery life? how heavy a user are you? for reference, I get around 16 hours of battery life if I don't charge the phone at all from unplugging to battery dying with moderate to heavy usage (texting ~50 times a day, sometimes up to 100 emails depending on what's happening at work, couple hours of calls, couple hours of streaming music [pandora or audiogalaxy], couple of hours of games [peggle and plants v zombies mostly - both of which are resource hogs], etc).
I have just learned to get used to the fact that the phone is going to die if I use it a lot, so I've purchased three micro-usb cables and a car charger.. that way, unless I'm in an area where there is no charge-capable usb port nearby, I'm always able to get a little more juice if need be.
Click to expand...
Click to collapse
But some govenors don't drop the sleep to the lowest profile. In fact almost all keep it above the lowest clock. Other kernels allow it and you can also use third party to set it lower. When the tweaKr script becomes universal it will be even better =)
Sent from hells ghost chili mexdroid

ohgood said:
check out 'powersave' and set your cpu max to 806mhz. should last you a nice long time like that. responsiveness suffers, of course.
'ondemand' and 806mhz is the best comprimise for me. still fine with HDvideo recording, streaming audio, Nav, etc
if you really want to make it last... clock down to 400mhz, turn off all the sync, set brightness and timeout to minimum, all the radios off (airplane mode), and the volume down, on vibrate.
;-)
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Click to collapse
It suffers in powersave because it stays at the lowest setting only. No reason to set to 806. Lol and that bottom comment is hella funny =), but if he does that his phone will just be...a waste of pocket space.
Your best bet is to do some research on kernels. If you are using cm7 to cm 7.0.3 id recommened pyros kernel. If you are on 7.1 or a nightly over 121 I believe id go with eugene's streamline5. It did wonders for mine Also there is a battery saving tips. Google G2 battery saving tips. Should be first link that comes up.
Cyanogenmod roms are known to be battery hungry. Nom nom nom.
Sent from hells ghost chili mexdroid

cjward23 said:
Have you tried wiping battery stats?
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Click to collapse
I used the battery califration app if that's what you mean.
Thanks for all the help guys, i'll check out some Kernals.

popimp315 said:
Your best bet is to do some research on kernels. If you are using cm7 to cm 7.0.3 id recommened pyros kernel.
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Click to collapse
Do you have link for this? I'm running 7.0.3.. but I dont think im finding the correct Kernal.

Mugen 3600mah = better battery life...

Can you elaborate on what kind of battery life you are getting now? How many hours, and for what level of usage?
How long have you been on CM? It takes a couple charge cycles of the battery after flash any ROM, for the battery meter to be accurate. Clear battery stats (as mentioned) then charge to 100%, let drain to about 20%, repeat a couple times. Don't drain until the phone dies. Some people say to do this, and its not good advice. Over discharge of Li ion batteries can cause them to no longer take a charge. There are people on here, on the Vision and other phones, that let their battery drain to empty, then the phone would no longer boot, forcing them to replace the battery.

Mog said:
Mugen 3600mah = better battery life...
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Click to collapse
It has good battery life but the battery sticks out a lot and its very uncomfortable
Sent from my HTC Vision using XDA App

evilcuber said:
It has good battery life but the battery sticks out a lot and its very uncomfortable
Sent from my HTC Vision using XDA App
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Yup its all opinionated. I would never go back to stock.
Sent from my T-Mobile G2 using XDA App

trench619 said:
Do you have link for this? I'm running 7.0.3.. but I dont think im finding the correct Kernal.
Click to expand...
Click to collapse
Dev section
Sent from my HTC Vision using XDA Premium App

[Q] overclock

i have setcpu and the lost rogue v1.3 and i what to put it at 1704 MHz but it freezes or reboots, so what could i do? what voltage?

You can try upping the voltage, not every phone will run at the highest speeds. Overclocking is luck of the draw, not every processor will react the same. My phone requires 1550mv @1.6 to be stable and 1.7 is not stable. There is no real advantage to running the processor this high anyways. 1.2-1.4 is the sweetspot, 1.2 does everything the phone needs to and you usually have room to underclock, to increase battery life and usability of the phone. Benchmarks can be fun but imo, stable phone @ lower voltage > semi-stable benchmark monster @ high voltage.

Econ212 said:
You can try upping the voltage, not every phone will run at the highest speeds. Overclocking is luck of the draw, not every processor will react the same. My phone requires 1550mv @1.6 to be stable and 1.7 is not stable. There is no real advantage to running the processor this high anyways. 1.2-1.4 is the sweetspot, 1.2 does everything the phone needs to and you usually have room to underclock, to increase battery life and usability of the phone. Benchmarks can be fun but imo, stable phone @ lower voltage > semi-stable benchmark monster @ high voltage.
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Click to collapse
Agreed, I have tried all sorts of overclocking and always go back to 1.352 or 1.2 because of stability. Sure you can bump it up and get high benchmarks, but who cares it is just a number. I would much rather have lower numbers and a stable phone.

I am running New Senzation ROM with the Desparado Kernel and I am running smooth and blazing fast at 1600. I actually can run at 1704 but dont like to overclock to that speed for very long but havent had any crashes.

bbb1977 said:
I am running New Senzation ROM with the Desparado Kernel and I am running smooth and blazing fast at 1600. I actually can run at 1704 but dont like to overclock to that speed for very long but havent had any crashes.
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Wanna trade phones? I wonder if you could push it higher? I can get mine to run at 1.7, but it will eventually crash within a few minutes. 1.4 seemed to be the most stable (and got the best quadrants) , but I don't bother OC'ing anymore. The phone runs fine without it. I don't really ee the point. I do notice some lag hear and there at 1.6.

I almost always am in the 800mhz range and rarely does my phone jump to 1ghz and definately almost never hits 1.2ghz. Besides trying to get your phone to give you some meaningless number as far as the real world is concerned ( quads) there is zero reason to ever overclock THIS phone. This phone has better battery life than iPhone with a slightly higher clock which is awesome. It actually performs the best of any phone to date. People conatantly hate on apple so hard to the point that when apple actually does something thats honestly great people still see the cup half empty with them. Apple has some of the best battery life of any smart phone to date. It also is one of the smoothest UI's out. They are a smart company and have great hardware. The example i like and cheer them on for is there way of using there cpu in a certain way. They have a really beefy cpu and then they underclock it quite a bit so it just sips battery power. Yes apple doesnt actually multi task so its easier for them to achieve battery life this way easier and it requires more cpu to run our phones as they have REAL multi tasking but i use the same idea. I underclock my phone to run at 800mhz till i reach 80% cpu load then bump to 1ghz. I never have my phone shutter or lag. The GPU is a monster. I get sooo much more battery life out of it. Overclocking is nearly pointless as a daily driver on this phone. In the past with my HTC Eris and HTC Evo 4g i had to overclock as muCh as possibly due to lack of a powerfull CPU and GPU but this phone (just like iPhone) has more than enough muscle and should be under clock 200mhz with no ill effect at all. Thia phone truely is the first legit android device in my eyes because it has more than enough under the hood. Underclock 200mhz and undervolt -75 and this phone truely shines and comes out #1 phone today in ALL areas. Smoothest scroling, lagless and best battery life to date. I love this phone and my set up

bluefire808 said:
I almost always am in the 800mhz range and rarely does my phone jump to 1ghz and definately almost never hits 1.2ghz. Besides trying to get your phone to give you some meaningless number as far as the real world is concerned ( quads) there is zero reason to ever overclock THIS phone. This phone has better battery life than iPhone with a slightly higher clock which is awesome. It actually performs the best of any phone to date. People conatantly hate on apple so hard to the point that when apple actually does something thats honestly great people still see the cup half empty with them. Apple has some of the best battery life of any smart phone to date. It also is one of the smoothest UI's out. They are a smart company and have great hardware. The example i like and cheer them on for is there way of using there cpu in a certain way. They have a really beefy cpu and then they underclock it quite a bit so it just sips battery power. Yes apple doesnt actually multi task so its easier for them to achieve battery life this way easier and it requires more cpu to run our phones as they have REAL multi tasking but i use the same idea. I underclock my phone to run at 800mhz till i reach 80% cpu load then bump to 1ghz. I never have my phone shutter or lag. The GPU is a monster. I get sooo much more battery life out of it. Overclocking is nearly pointless as a daily driver on this phone. In the past with my HTC Eris and HTC Evo 4g i had to overclock as muCh as possibly due to lack of a powerfull CPU and GPU but this phone (just like iPhone) has more than enough muscle and should be under clock 200mhz with no ill effect at all. Thia phone truely is the first legit android device in my eyes because it has more than enough under the hood. Underclock 200mhz and undervolt -75 and this phone truely shines and comes out #1 phone today in ALL areas. Smoothest scroling, lagless and best battery life to date. I love this phone and my set up
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Ahhh big wall of text hates!

Gladdos vs Franco on cm9

Which kernel do you guys prefer? Gladdos is awesome because I love its app with sound options . App seems to also work with Franco kernel though, but as far as reliability and performance goes, which do you guys like more?
Sent from my Galaxy Nexus using XDA

Both are very stable. Use the one that you like more. Franco also has an app.
Sent from my GT-P3113 using xda premium

Personally I'm a big fan of the CM9 kernel. I use CMPlus by Cheekybutt simply because headphones sound like crap without Ezekeel's high performance audio mod.

I use Glados. Its outstanding. I find I can oc higher much more reliably. I use 1.6 for everyday usage which is not even seen as an option on many other kernels. on a lot of other kernels, Franco included I can't run higher than 1.35 CPU and 384GPU. I run 1.6 and 512 with glados. And the app kicks ass with tons of adjustable features!

M3drvr said:
I use Glados. Its outstanding. I find I can oc higher much more reliably. I use 1.6 for everyday usage which is not even seen as an option on many other kernels. on a lot of other kernels, Franco included I can't run higher than 1.35 CPU and 384GPU. I run 1.6 and 512 with glados. And the app kicks ass with tons of adjustable features!
Click to expand...
Click to collapse
512 GPU doesn't make a difference.. neither really does OC or UC
"Long is the way, and hard, that out of hell leads up to light."

joshnichols189 said:
512 GPU doesn't make a difference.. neither really does OC or UC
"Long is the way, and hard, that out of hell leads up to light."
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Click to collapse
I heavily beg to differ. I notice a difference immediately. Everything is smoother when I do oc.

Just tried ocing the gpu in glados kernel and wow, definitely a difference! Now, at 504mhz, does it effect our battery life in a major way?
Sent from my Galaxy Nexus using XDA

Glados with the wheatley gov.
Awesomesauce.
Sent from my Galaxy Nexus using XDA

afive720 said:
Just tried ocing the gpu in glados kernel and wow, definitely a difference! Now, at 504mhz, does it effect our battery life in a major way?
Sent from my Galaxy Nexus using XDA
Click to expand...
Click to collapse
From what I've heard (not tried), the gain from OC'ing is minimal and battery consumption increase is quite big.
Swyped on my CM9 Galaxy Nexus

why do you even need to overclock? To me battery life is most essential factor and I have yet to come across a kernel that can give me satisfactory results, stock included. The screen on this thing is beautiful but eats battery like no other. I can't wait for Verizon to have a larger Note like device so we can have a larger battery.

The battery life on this phone is amazing for a Verizon LTE phone. Before I activated the phone I played with it around the house for about a week (had to take care of some things before I quit using the iPhone). I went 25 hours with 3 hours of display time. Mind you this was all on WiFi and since it wasn't activated there was no talk time. LTE is the battery destroyer not so much the screen. I have never ran this phone stock, so I have no benchmark to compare it too, but the charging times on the Franco kernel are insane. Went up 65% in 1 hour over a car charger.
I'll have to check out the Gladdos kernel.

what car charger do you have and what apps were you running? I have a 1.2amp usb charger from monoprice and with maps and pandora on it charges for a bit before it gets too hot and switches to "not charging" to not overheat. Then it stays at about the same battery level, give or take a few %

Something similar to this....http://www.newegg.com/Product/Product.aspx?Item=9SIA07Y02A5396. Since it's dual port I'm sure it has a bigger fuse.

M3drvr said:
I heavily beg to differ. I notice a difference immediately. Everything is smoother when I do oc.
Click to expand...
Click to collapse
I suggest reading through the Franco.Kernel thread.. everything above 384 is minimal at best.
"Long is the way, and hard, that out of hell leads up to light."

ashish8 said:
The battery life on this phone is amazing for a Verizon LTE phone. Before I activated the phone I played with it around the house for about a week (had to take care of some things before I quit using the iPhone). I went 25 hours with 3 hours of display time. Mind you this was all on WiFi and since it wasn't activated there was no talk time. LTE is the battery destroyer not so much the screen. I have never ran this phone stock, so I have no benchmark to compare it too, but the charging times on the Franco kernel are insane. Went up 65% in 1 hour over a car charger.
I'll have to check out the Gladdos kernel.
Click to expand...
Click to collapse
which brings me back to the another comment I made in another thread, LTE speeds for a phone is unnecessary. Lose battery life and pay up the wazooo if you don't have unlimited data (soon all of us)? Just a way for the big red to justify charging more. #switchingoffLTE

joshnichols189 said:
I suggest reading through the Franco.Kernel thread.. everything above 384 is minimal at best.
"Long is the way, and hard, that out of hell leads up to light."
Click to expand...
Click to collapse
Then why offer a 512oc if its nothing? Reality is, the phone is noticeably smoother with it. And virtually no hit on battery life. I'm still getting high 3 hours screen on time and 20+ hours battery life. I'll take the much smoother experience for minimal battery life hit.

M3drvr said:
Then why offer a 512oc if its nothing? Reality is, the phone is noticeably smoother with it. And virtually no hit on battery life. I'm still getting high 3 hours screen on time and 20+ hours battery life. I'll take the much smoother experience for minimal battery life hit.
Click to expand...
Click to collapse
Much smoother? Exaggerate much??
And as for battery life, I get 5hrs screen on with 384.
Games run smoothly, UI is smooth, what more do you need.
If you can run 512 then why not but it does not make that much of a difference.
I have used both and I find no difference.

nodstuff said:
Much smoother? Exaggerate much??
And as for battery life, I get 5hrs screen on with 384.
Games run smoothly, UI is smooth, what more do you need.
If you can run 512 then why not but it does not make that much of a difference.
I have used both and I find no difference.
Click to expand...
Click to collapse
Well, for me on my phone, its a major difference between 384 and 512. And I've seen several people comment that it is a difference on their phone too. Web pages scroll is jerky on 384 for me, and with 512 its perfectly smooth. I've never ever gotten 5 hours screen on time with any setting I've ever chosen on my phone so thats not even in the question. Max ever was 4:30 screen on, that was with screen brightness lowest possible, entire time with wifi, which is not even in the question for me on a normal day. Normal for me is high 3's.
Anyways, we all know none of these phones are the same. They react differently to different settings. All I know, is on my phone, 512 is by far smoother than 384. And at a 40% OC of the CPU (1680-1700mhz) the phone is also noticeably faster. And actually, on my old Galaxy S, 1400 was the magic number i needed for things to actually FEEL and LOOK faster, which was 40% more. Anything less than that, I couldn't notice a boost. Thats just my thought on my phone.

Its very easy to see the difference in scrolling smoothness between 512gpu and 384gpu.
All you have to do is go to theverge.com mobile site and just scroll up and down using the stock browser.
The difference is very noticeable.

Glados 1.34 seems to resolve data drop issue, so I've stuck with it for now.
Sent from my Galaxy Nexus

battery question

I dont know if its phone battery thats up or has bad battery life.Ive noticed my battery runs out rather quickly for example i played subway surfer for like 10 minutes i look my battery life & it has dropped 20% from 80% so i was at 60% it my battery faulty or is it normal.Also any suggestions on other batteries that have better battery that work on this phone.
Sent from my SGH-T989 using xda app-developers app

Just my 2 cents dude,
but battery life drove me crazy with this phone. I wound up rooting my phone, installing a bunch of different Roms, and going through tons of programs. Bottom line that I've come up with is this, you have to root your phone. If you don't want to install Roms thats fine, but there are some that I have had great battery life with, namely Jedi MInd Trick and Rushing's Galaxy_ROM (currently using). Get yourself a CPU program and underclock the hell out of your CPU. I use CPU tuner with the uniform profile and max out the cpu around 1 ghz, the phone runs fine with it too. Finish off with Llama and you should be good to go.
Make sure data, wifi and most other crap go off when your screen does. Also make sure the cpu is almost off when the screen is. I have mine set to around 500 mhz .
It kind of sucks to have to do it, but it makes this phone much more tolerable.
Hope this helps
MakinG2xLovin said:
I dont know if its phone battery thats up or has bad battery life.Ive noticed my battery runs out rather quickly for example i played subway surfer for like 10 minutes i look my battery life & it has dropped 20% from 80% so i was at 60% it my battery faulty or is it normal.Also any suggestions on other batteries that have better battery that work on this phone.
Click to expand...
Click to collapse

Fix Exynos 990 battery drain and Overheating Issues -[ It works ]

I have the exynos 990 version of the S20 FE and as we all know, the 990 is a little bit of a hot mess. However it has quite a lot to give if limited correctly.I'm running One UI 3.1 on android 11. I rooted my FE with magisk and installed Franco kernel manager. The steps below will give you good battery life and performance.
Step 1: Straight up disable the M5 mongoose cores. They are Samsung's biggest undoing.
Step2 : Limit all clock speed to 2Ghz. Trust me, the IPC on the 990 is really damn good and you don't need to worry about performance loss. Forget the benchmarks, everything just works. Getting the last 2.7ghz or 2.5ghz usually requires a significant voltage bump and you mostly wont need the speed.
Step3 : The GPU is actually just fine as is. Try to set the max clock to 370mhz, which sounds ridiculously low, but the 990's GPU was made for 1440p screens, so the UI still remains smooth even at 120Hz. I played Riptide Renegade with this setting and it was very smooth as well. You can play with this number according to how much you game, I, for the most part, don't.
My hypothesis, based on my usage of about 2 months (yeah, i rooted this bad boi about a week from purchase, screw warranty, i'm gonna be alone for life :-( ) is given below >>>>>>
Thermal throttling seems to be due to the M5 cores clocking up like crazy while doing basically nothing. This is probably mostly because Samsung uses their own "energy_step" CPU governor which still needs some work. You can try changing this to schedutil ( which is basically EAS ) and see how it fares. The GPU also ends up underclocking because the GPU has a " joint " governor ( basically ramps up and down with CPU speed to some extent, not entirely sure about this, i may be completely wrong).
I have also have put a battery charge limiter in place at 90% but that doesn't really make a difference. I use my phone quite heavily and at 120Hz but still get about 18 - 20 hours of usage (not 20h screen on time!)if on FULL CHARGE
In fact if you even disable the "BIG" i.g A77 cores, and use only the four A55 "little" ones, it's still good for daily usage. Processing time on the camera takes a bit of a hit, but you can always create a custom profile for that to enable all cores for the camera app. I have my phone skinned with the AOSP-R day/night hex installer theme.
Also huge reasons for rooting :
Tasker > for some insane automation profiles i made
Naptime, Servicely > Free extra battery life
The battery charge limiter to preserve my long term battery life.
Also a GCAM update, the scan3d APKs of BSG are getting rather good. We need to get together an tune the hell out of this sensor to get it to par with the stock camera tho, especially during night. Also no telephoto support, AFAIK. One S20FE confing shall be in the works.
Unrelated shameless self plug : https://www.youtube.com/c/siddharthlh please visit my youtube channel. It does contain some interesting tutorials for tech heads

I'm going to share this thread over on reddit with the army of disgruntled Exytoast users. if this works they will love you as a living god

3mel said:
I'm going to share this thread over on reddit with the army of disgruntled Exytoast users. if this works they will love you as a living god
Click to expand...
Click to collapse

Maybe tag me in the post or something I'm siddharth_lh on reddit. I can help out there itself

done...
https://www.reddit.com/r/GalaxyS20FE/comments/ndnp0s

By "M5 mongoose cores" you mean the ones labeled as "Prime cores"? Just rooted and tried this. Will report back with results.

hectorviov said:
By "M5 mongoose cores" you mean the ones labeled as "Prime cores"? Just rooted and tried this. Will report back with results.
Click to expand...
Click to collapse
Yep

bipolar unbound said:
Yep
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Click to collapse
Did you apply these settings?
How's performance and results been?

bipolar unbound said:
Step 1: Straight up disable the M5 mongoose cores. They are Samsung's biggest undoing.
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Click to collapse
What does this do?
Also I dont wanna set the clock speed any lower is that fine?

Cheetah1020 said:
What does this do?
Also I dont wanna set the clock speed any lower is that fine?
Click to expand...
Click to collapse
if you're changing the max frequency via a kernel tweaking app you can simply change it back if you don't like it.

hectorviov said:
By "M5 mongoose cores" you mean the ones labeled as "Prime cores"? Just rooted and tried this. Will report back with results.
Click to expand...
Click to collapse
How did it go?

Cheetah1020 said:
How did it go?
Click to expand...
Click to collapse
It's been about a week and just 2 days ago I started seeing better battery life. The first 4-5 days were the same as before. I straight up disabled the 2 "prime" cores and the performance is basically the same. Never noticed a hiccup or a slow down. Before I rooted and tried this I was getting about 2.5 hrs SOT before I had to charge and now I'm getting about 3-3.5 hours, just a little more. Seems like less overheating (haven't check temps, just the feeling of it). What I haven't figured out is how to make the change on the GPU frequencies stay, if I set a max, it doesn't cares about it and it still goes above the limit. I'm always using 120 hz on this changes, so I'd say it's worth it.

hectorviov said:
It's been about a week and just 2 days ago I started seeing better battery life. The first 4-5 days were the same as before. I straight up disabled the 2 "prime" cores and the performance is basically the same. Never noticed a hiccup or a slow down. Before I rooted and tried this I was getting about 2.5 hrs SOT before I had to charge and now I'm getting about 3-3.5 hours, just a little more. Seems like less overheating (haven't check temps, just the feeling of it). What I haven't figured out is how to make the change on the GPU frequencies stay, if I set a max, it doesn't cares about it and it still goes above the limit. I'm always using 120 hz on this changes, so I'd say it's worth it.
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Click to collapse
I think should wait for Android 12 to see if it gets better if not then I will do this process

Me too. Great tips!

Go to settings and search for "Limit CPU speed to 70%" and turn it on. Normally gives better battery life. Haven't seen any major bottleneck in performance.

adhikraman said:
Go to settings and search for "Limit CPU speed to 70%" and turn it on. Normally gives better battery life. Haven't seen any major bottleneck in performance.
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Doesnt it affect performance in games and stuff?

Cheetah1020 said:
Doesnt it affect performance in games and stuff?
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Haven't experienced any major performance hit in regular usage. Not a heavy gamer so your mileage might vary.

Guys...the last update for Exynos really worked? I've heard about changes in CPU governor that worked!

hectorviov said:
It's been about a week and just 2 days ago I started seeing better battery life. The first 4-5 days were the same as before. I straight up disabled the 2 "prime" cores and the performance is basically the same. Never noticed a hiccup or a slow down. Before I rooted and tried this I was getting about 2.5 hrs SOT before I had to charge and now I'm getting about 3-3.5 hours, just a little more. Seems like less overheating (haven't check temps, just the feeling of it). What I haven't figured out is how to make the change on the GPU frequencies stay, if I set a max, it doesn't cares about it and it still goes above the limit. I'm always using 120 hz on this changes, so I'd say it's worth it.
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Still that§s a really poor battery performance, and now without warranty... I will take my s20fe to samsung and if they wont repair or change it, I will be also forced to root my phone.

My experience rooting S20+ Exynos 990 following this thread:
TL;DR: Added 6-8 hours of standby battery life just from turning off prime and big cores, haven't checked on screen battery life since I don't use my phone much at work, but I wanted standby time improved.
Before turning off the prime and big cores, I got 11 hours tops on battery life. Seemingly out of nowhere the phone was always warm, despite just sitting at my desk with a very strong signal. I knew that at 12 pm, with 50% brightness, 120hz, and AOD I would expect at least 50% just gone even though I barely even used the damn thing. The straw that broke me, is that even though I was connected to wifi, I could only expect maybe at most, 3-4 hours of screen on time, which finally drove me insane. I checked out the thread sometime ago but was skeptical if it really was worth the trouble since it seemed a lengthy process. Take it from someone who hasn't rooted in a long time, just follow the guides and it all is pretty simple.
After turning off the prime and big cores, immediately thermals were so much better, after 3-5 minutes the phone was much cooler, about 5-8 degrees cooler on the chip area. Since the phone was reset, I couldn't really tell if battery was better. After the using my phone for a week rooted I can tell you, the battery difference is abysmal.
Before, I was struggling to end my day on 30-20%, now I can confidently end my day on 60-50%, depending on how much I used my phone. When idle the phone, barely sips battery, my estimate is that it went from 8-10% just idling, to 3-4% (need to check since I haven't turned on the prime cores ever since rooting). I wasn't willing to sacrifice 120hz so I always kept it on and battery life was good, however I will test with Max Hz on 96 hz, which should extend battery life.
Performance on the little cores is virtually the same, I haven't noticed any hiccups, lag or anything by that matter. I was concerned that on this thread it was mentioned that the camera took a hit, but on the S20+ nothing has changed, maybe the shutter is 0.3 seconds slower but I honestly don't notice or it doesn't bother me at all. Recording high resolution videos is no problem, and nothing really changed for me. Thermals are massively improved, if you're doing a heavy task, like recording, downloading or uploading, or something that you know requires heavy lifting, of course the phone will get warm, but not even close to how hot it would get just idling or doing the same tasks with the big or prime cores.
Since I don't play games I can't really say whether gaming has taking a hit or not, I would say that it depends on the game you're playing. You can always create a profile that enables the prime and big cores on FKM.
Overall I can say this, if you have an exynos 990 phone and getting real sucky battery life, rooting is the way to go. This phone just feels so much better with this extended battery life, and now rooting allows me to mod it as I want it or turn off things that weren't useful. Just be warned you will lose Google Pay and some apps from Samsung that use Knox, but for me what you get in return is so much valuable.
Please let me know if you have other questions from rooting the chip.