Develop Bugs

[Q] horrible battery life with any ROM

Hey all,
I'm having serious battery drain on MIK 2.56 and pretty much any ROM that I flash. I'm running Chopsuey9.2.7 along with SetCPU profiles. I underclock the majority of the times.
My SetCPU profiles are:
Set on Boot = 691max/245min conservative
Charging = 1152/245 performance priority 100
Screen off = 245/245 ondemand priority 99
In-call = 1152/245 performance priority 98
Battery <50% = 691/245 conservative priority 97
Temp >43.7 degrees = 614/245 conservative priority 96
My evo doesn't like to be clocked at 128 or even 499. It reaches temps as high as 115-120 degrees during charging and while in my pocket (I'm thinking it may have got damaged when I used to run the SBC kernels in the early stages). Im starting to think that i have a bad battery. My battery will drain from 100% down to 80% within 5 minutes and usually will be dead within 2 1/2 hours after being off of the charger with moderate usage such as calls
text and checking email. I have Autokiller running and have set memory Lowmem settings to extreme thru Darktremor a2sd.
Any ideas/suggestions?

I personally would stop messing with setcpu, its cool to see a phone all Super fast and what not, but isn't completely necessary to govern everything you do [calling, sleeping, etc..] I only find it cool to use when I'm playing a cool ass game like contract killer: zombies for nice smooth graphic, or running a benchmark.. otherwise messsing with setcpu tends to do awkward things like drain battery when not properly adjusted, **Especially when overclocked.

My stock battery lasts all day with my current setup. I have setcpu as well but don't really mess with it. I use Smartass governor with 1075/245 for normal everyday use. If I have too many drinks and have to crash at a friends house without my charger I'll drop the max speed to about 700 and use conservative or just switch the governor to powersave. Then I've got more than enough time till I need to get back to a charger.

i got good life on that ROM using Aggressive Freedom kernel & using set cpu at 245/768 set at boot....no profiles.

So you think the use of profiles is the issue? I'm not completely sure the profile for screen off is working correctly; I ssh'd into my EVO and took a look at /proc/cpuinfo but it will not show the current cpu speed.
I'll give it a shot without profiles and see. As for the govenors, I believe Smartass was removed and replaced with InteractiveX; is InteractiveX as good?

j7jman said:
I personally would stop messing with setcpu, its cool to see a phone all Super fast and what not, but isn't completely necessary to govern everything you do [calling, sleeping, etc..] I only find it cool to use when I'm playing a cool ass game like contract killer: zombies for nice smooth graphic, or running a benchmark.. otherwise messsing with setcpu tends to do awkward things like drain battery when not properly adjusted, **Especially when overclocked.
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I agree but with the way my profiles are set, I'm underclocking the majority of the time and only overclock when charging or on a phone call.

ive noticed i get wose battery life if i set up profiles. Worth a shot.

Sprint will test the battery for charge free I actually did it today
Sent from my PC36100 using XDA App

Could be your baseband or pri. Or maybe update ur prl through a sense rom.
If your phone has a horrible signal it will drain like crazy.
Sent from my PC36100 using Tapatalk

r.storm85 said:
Could be your baseband or pri. Or maybe update ur prl through a sense rom.
If your phone has a horrible signal it will drain like crazy.
Sent from my PC36100 using Tapatalk
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That's correct. Also check your spare parts app for any wake lock.
Also, if you're using a havs kernel, setcpu will conflict with the kernel. And in general, you'll always get better battery life on AOSP.

try using setcpu sometimes that will help save battery.

Disabled Profiles in SetCPU....no luck
So I disabled profiles in setCPU and am underclocking at 691/245 and battery life is still the same. I have the most recent radios/PRI/PRL as well and still getting rapid battery drain. One weird thing it does is the phone will hit 0% and shutdown; I'll place it on the charger (AC wall charger, not the usb adapter) until the orange LED stops blinking; I'll turn the phone on and once it's fully booted it will read 53%......all of this within 5mins of going dead! WTF!!!
I just wiped battery stats again in recovery and will boot and see what that does for me. I'm really starting to think the battery is partially bad....

Just left Sprint. They tested the battery and it tested bad and was swollen. I got a stock replacement free of charge although he said they normally would have charged me because the 1yr factory warranty expired. He also went on to say that the battery going bad was possibly caused from my phone being rooted which he may be partially correct. The problem began when SBC first came out and I was testing on the beta stage. It nice to have my phone off of the charger and not be down to 60% within 45 mins!
Sent from my PC36100 using XDA App

lostsoul77 said:
So I disabled profiles in setCPU and am underclocking at 691/245 and battery life is still the same. I have the most recent radios/PRI/PRL as well and still getting rapid battery drain. One weird thing it does is the phone will hit 0% and shutdown; I'll place it on the charger (AC wall charger, not the usb adapter) until the orange LED stops blinking; I'll turn the phone on and once it's fully booted it will read 53%......all of this within 5mins of going dead! WTF!!!
I just wiped battery stats again in recovery and will boot and see what that does for me. I'm really starting to think the battery is partially bad....
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my phone has been doing this exact same thing but i took it to sprint they said my battery was good should i go to another sprint tech and let them test it out?

xperia play overclock

im now using a custom rom with the overclock kernel... i set my phone to "1.4ghz" with AnTuTu... its working great now... no more fps lags on the games i play... and no crashes... im just curious about one thing? will it break the phone in any way? its not heating up or anything atm... i mean i have experienced phone heat on my sensation xe... that phone gets really hot STOCK....
i dont want to break my play... i really like it compared to other phones in the market right now(the only one with gamepads)... its my first time ocing a phone btw...

If its not noticably hot (the battery too) constantly then your fine, just bare in mind try not to push it past 1.6ghz i found my phone didnt last very long at that speed.

The only thing with oc its that it shortens the life of your cpu obviously depending on how much you oc it....and it drains more battery but its not that big of a deal

Defy39 said:
If its not noticably hot (the battery too) constantly then your fine, just bare in mind try not to push it past 1.6ghz i found my phone didnt last very long at that speed.
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what do you mean by it didnt last very long? did it break the phone?

Basically, my phone is overclocked to 2.0 GHz with smartass scaling with max 800MHz interactive scaling when screen turned off. It works great! Lasts 2~3 days without gaming (5 to 7 days with airplane mode on) and 4~8 hours of hardcore gaming with full charge (6~12 with airplane mode on). I recommend using an extended battery (I haven't, yet) if you are doing so. And it also involves luck. Even if it is the same model, color, etc. some CPUs are more capable than others.

still testing my phone under 1.4ghz seems stable...

DanielEGVi said:
Basically, my phone is overclocked to 2.0 GHz with smartass scaling with max 800MHz interactive scaling when screen turned off. It works great! Lasts 2~3 days without gaming (5 to 7 days with airplane mode on) and 4~8 hours of hardcore gaming with full charge (6~12 with airplane mode on). I recommend using an extended battery (I haven't, yet) if you are doing so. And it also involves luck. Even if it is the same model, color, etc. some CPUs are more capable than others.
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is it normal for the phone to be abit hotter than when it was running stock???
btw how does smartass compare to ondemand?? smartass tends to get lower benchmark scores than on demand

seagheart89 said:
is it normal for the phone to be abit hotter than when it was running stock???
btw how does smartass compare to ondemand?? smartass tends to get lower benchmark scores than on demand
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Yes ofc its normal - as each CPU/GPU creates heat based on the load it takes....
So the higher u OC the hotter it gets - thats why in former days OC was quite dangerous
In todays times cpu normaly 1st get unstable, and then has a safety function to shutdown if it gets too hot. (no warrenty that its the same for all chips)
smartass doesnt switch frequencies at once like on demand (e.g. instant from 200mhz to 1000mhz) but it tries to predict the needed power somehow so the whole switching is done in more steps... (as far as I remember)
So yes its performace is a bit below the on demand - but should not be that noticable - but it will also save your battery.

Is my phones battery drianing fast or not?

My HTC One X runs on ICS 4.04 on stock (JB is not yet out for my phone). I wanna know if my phone is actually draining or not.
I had recently sent my phone for service and i had a odd smoking smell from my phone, as an additional compliant i told them that my battery also drains fast. HTC replaced my battery for the issue and sent it back.
I don't think my phone has improved on the battery performance. Got very curious and attempted to check the battery usage during gaming.
I played the NFS for 3 to 4 minutes and i noticed a decrease in the battery level of 4 to 5 %. Repeated the test couple of time to average at the same results.
PS: i started the game and never touched the phone and let it completed by itself. the game runs for about 3 minutes and 40 seconds to be little precise.
Can you suggest if this is actually the expected levels of decrease or is the phone draining faster?

pradeepvizz said:
My HTC One X runs on ICS 4.04 on stock (JB is not yet out for my phone). I wanna know if my phone is actually draining or not.
I had recently sent my phone for service and i had a odd smoking smell from my phone, as an additional compliant i told them that my battery also drains fast. HTC replaced my battery for the issue and sent it back.
I don't think my phone has improved on the battery performance. Got very curious and attempted to check the battery usage during gaming.
I played the NFS for 3 to 4 minutes and i noticed a decrease in the battery level of 4 to 5 %. Repeated the test couple of time to average at the same results.
PS: i started the game and never touched the phone and let it completed by itself. the game runs for about 3 minutes and 40 seconds to be little precise.
Can you suggest if this is actually the expected levels of decrease or is the phone draining faster?
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You've for a quadcore device, its gonna chomp the battery away naturally. I've been reading that jb brings great battery improvements.
It all obviously depends on old school things roo. Like. Bluetooth, WiFi/mobile internet, brightness levels.
And also other factors like CPU governors, underclocking, over clocking, undervolting etc.
But the battery clearly isn't the problem as it was replaced and the levels don't seem THAT alarming.
Sent from my HTC One X

Lady Android said:
You've for a quadcore device, its gonna chomp the battery away naturally. I've been reading that jb brings great battery improvements.
It all obviously depends on old school things roo. Like. Bluetooth, WiFi/mobile internet, brightness levels.
And also other factors like CPU governors, underclocking, over clocking, undervolting etc.
But the battery clearly isn't the problem as it was replaced and the levels don't seem THAT alarming.
Sent from my HTC One X
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Thanks! That is comforting awaiting the JB update and hopefully the battery improvements..

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.
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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.
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Yep

bipolar unbound said:
Yep
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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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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?
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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.
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How did it go?

Cheetah1020 said:
How did it go?
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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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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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Click to collapse
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.