2 CPU cores are offline - Samsung Galaxy S7 Edge Questions and Answers

Hello there !
I've just noticed that 2 of the cores are offline in kernel adiutore (screenshot). Is it normal?
Thanks.

Yes,
its called hot-plugging. Save battery, feature.
It'll only come on when your phone needs the processing power.

Thank you for the reply, I was thinking there's something wrong with my phone.

Also, where did you get the green battery?

kylelopez20 said:
Also, where did you get the green battery?
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His s7 edge must be running a note 7 rom.

amar95353 said:
His s7 edge must be running a note 7 rom.
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Click to collapse
Yes, HydraRom

Related

[Q] Samsung S5 SM-G900G Battery Life

Hello Forum users i have Samsung S5 SM-G900G octa core 1.30
Problem is when i charge it with DC 5.0V -2.0A
it charge's fast and battery life is approximately 12 h and even without working anything and WIFI & 3G off it drops so fast..
But when i charge it with DC 5.0V -1.0A (my s4 adapter) i have battery life 50% longer..
so can anyone tell me what is your battery life in your s5 octa core or snapdragon?
if you have this problem i recommend to use s4 adapter it charge's slow but you will have large battery life.
Sure it's not a placebo effect you're experiencing? How many cycles did you make?
Sent from my SM-G900F using XDA Premium HD app
dashrink said:
Sure it's not a placebo effect you're experiencing? How many cycles did you make?
Sent from my SM-G900F using XDA Premium HD app
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this is my second time
hajrullah said:
this is my second time
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I'm facing similar issues.although I didn't try charging it using 1 amp charger.
I'll suggest u to wait for at least 5-6 discharge cycles.
And let me assure u , the battery life of snapdragon version will be better than the octacore on any day. We cannot help it but accept and make our peace.
St.Blitz said:
And let me assure u , the battery life of snapdragon version will be better than the octacore on any day. We cannot help it but accept and make our peace.
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Would love to see any tests that back up this statement.
Sent from my SM-G900H using Tapatalk
drakester09 said:
Would love to see any tests that back up this statement.
Sent from my SM-G900H using Tapatalk
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I think that must be quite obvious. Saw that on YouTube in a review
p.s. My battery life is improving. ☺
St.Blitz said:
I think that must be quite obvious. Saw that on YouTube in a review
p.s. My battery life is improving. ☺
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Hey, got a source for that youtube video?
Hellscythe said:
Hey, got a source for that youtube video?
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Click to collapse
https://www.youtube.com/watch?v=kzzBBhLqxVI
there are other videos as well since this topic is becoming so popular!!
cheers.
St.Blitz said:
https://www.youtube.com/watch?v=kzzBBhLqxVI
there are other videos as well since this topic is becoming so popular!!
cheers.
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Interesting enough, unfortunate that the reviewer did not show any battery stats to compare.
The S4 Exynos as a reference from what I read was unfinished and didn't really use the full potential of the underlying architecture.
I would guess that A15 cores at full speed would consume more power than Krait's but would provide better performance.
Also it's interesting that he's using the Snapdragon display model which does not have calls or messages functionality enabled (G900X).
Sent from my SM-G900H using Tapatalk

How to fix Battery Drain on the S7

REQUIRES ROOT
So some of the users of the S7 and S7 Edge are saying they are getting below 4 or 5 hours of SOT with normal use. Today, I have a solution that worked for me and I hope it will work for you. I only own a Exynos S7 and so I'm not sure if it will work for other devices. But do try it out if you are getting bad battery life.
Remember try this ONLY if you are getting bad battery life. If you are getting good (5 or 6+ SOT S7) battery life then you are okay.
First of all, I would assume you are using some kind of battery life saving app (because who doesn't want better battery life) like Naptime, Power nap, Amplify, Greenify, etc. Now just uninstall of all the Power saving apps. This may sound bad, but trust me.
Next, install a custom kernel. I would recommend Modified Stock kernel as it's not over clocked and Prometheus kernel as you can under volt the CPU. Do not over clock the CPU if you do not need to.
Lastly use the smart manager in the S7. Settings-> Battery->App Power Saving and select the apps to save battery.
Let the phone go through a few cycles before reporting back
Let me know if I helped you and a 'Thanksâ?? would be appreciated.
I'm on S7.
looks nice, but you forgot to mention that the phone needs be rooted...
avatar_ro said:
looks nice, but you forgot to mention that the phone needs be rooted...
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App battery saving settings does not require root but I will add that.
XDevOS said:
App battery saving settings does not require root but I will add that.
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I was referring to the "install a custom kernel" part
XDevOS said:
I'm on S7.
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No you are not, you are on S7 edge and most likely looking at a black screen for 4 hours.
Travis Bickle said:
No you are not, you are on S7 edge and most likely looking at a black screen for 4 hours.
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Lol sounds possible in this case
Travis Bickle said:
No you are not, you are on S7 edge and most likely looking at a black screen for 4 hours.
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930FD and besides why would I do that?
XDevOS said:
930FD and besides why would I do that?
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Cause you have 4 hours SOT with 55% left and 6 hours use. There's no way to get that SOT unless you have it in airplane mode with minimum brightness starring at a black screen. And I thought it was the edge cause of the white thingy on the right that the edge have.
Travis Bickle said:
Cause you have 4 hours SOT with 55% left and 6 hours use. There's no way to get that SOT unless you have it in airplane mode with minimum brightness starring at a black screen. And I thought it was the edge cause of the white thingy on the right that the edge have.
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Superman ROM and I was actually watching Netflix with 40 - 50% screen brightness and data on with wifi. Other users have also reported this kind of battery.
Sent from my Galaxy S7 using XDA Labs
XDevOS said:
Superman ROM and I was actually watching Netflix with 40 - 50% screen brightness and data on with wifi. Other users have also reported this kind of battery.
Sent from my Galaxy S7 using XDA Labs
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You were watching Netflix for 4 hours and yet the Netflix app is not in first 2 places? Assuming the Netflix app is third at best then that means that it has less than 11% (Android System). You could be right but I doubt it, I'd love to see a screenshot from when you get at 15% with total SOT and the apps that were used.

Battery drain problem

Guys I'm experiencing massive battery drain in Moto E4 even with nothing in phone only standby draining the juice....battery charging slowly and draining fast...anybody else experiencing this?
Device rooted that's all nothing else like heavy games and all...I'm getting only half a day
method of rooting ?
kartik verma said:
method of rooting ?
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Yours
Is your reception good?
drganbds said:
Yours
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LOL
andMego said:
Is your reception good?
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Yes but draining fast and what about yours guys?
drganbds said:
Yes but draining fast and what about yours guys?
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This might help a little. Look for these lines in your build.prop:
ro.core_ctl_min_cpu=2
ro.core_ctl_max_cpu=4
Change the value of he first line to 1. It's set to run on 2 cores minimum. If the lines aren't there, try adding at least the first set to 1.
Edit: it actually sounds like you may have a battery problem or another problem with your device. Might want to try to get it replaced.

Battery life

Is it me or s10 plus sucks on battery life right.
Sent from my SM-G975U using Tapatalk
amazin1988 said:
Is it me or s10 plus sucks on battery life right.
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It's definitely just you bruh
mistermidas said:
It's definitely just you bruh
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Naw man my s9 plus last way longer. I used to get a full day one charge. So far with this s10 plus I'm changing twice a day.
Sent from my SM-G975U using Tapatalk
amazin1988 said:
Naw man my s9 plus last way longer. I used to get a full day one charge. So far with this s10 plus I'm changing twice a day.
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That's just today... Pretty much my average usage as long as I have a decent 4g signal or wifi available. I'm using the US Sprint Snapdragon model by the way.
mistermidas said:
That's just today... Pretty much my average usage as long as I have a decent 4g signal or wifi available. I'm using the US Sprint Snapdragon model by the way.
Click to expand...
Click to collapse
I fix the problem got about a day in a half so I'm very satisfied with my phone.
Sent from my SM-G975U using Tapatalk
amazin1988 said:
I fix the problem got about a day in a half so I'm very satisfied with my phone.
Click to expand...
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How did you fix the problem?
lesmana.raymond said:
How did you fix the problem?
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Click to collapse
Factory reset and made sure that daptive setting is off. Run the usual med power mode.
Sent from my SM-G975U using Tapatalk
amazin1988 said:
Naw man my s9 plus last way longer. I used to get a full day one charge. So far with this s10 plus I'm changing twice a day.
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Same hete
amazin1988 said:
Factory reset and made sure that daptive setting is off. Run the usual med power mode.
Sent from my SM-G975U using Tapatalk
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Adaptive battery suppose to help better life..
Sent from my SM-G975F using Tapatalk
Notefan161 said:
Adaptive battery suppose to help better life..
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The phone has adaptive battery & adaptive power saving (power mode). I think the user you quoted was using the latter.
Ace42 said:
The phone has adaptive battery & adaptive power saving (power mode). I think the user you quoted was using the latter.
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Click to collapse
Pretty sure the phone only has adaptive power saving mode. If adaptive battery exists it's just something within the ai built into the phone....which would also work with adaptive power saving mode.
amazin1988 said:
Factory reset and made sure that daptive setting is off. Run the usual med power mode.
Click to expand...
Click to collapse
What did you restore to your phone after you did a factory reset?
If your battery life was bad, is either because you restore apps from either smartswitch or a backup, or because of the proximity sensor bug. Otherwise battery life should be good, unless you have apps that are draining a lot of battery. I had 10h SoT on my exynos variant and battery was not charged to 100 was at 94%. I will suggest you to look a the battery optimisation guide here, and also the exynos battery life thread.
aromerodaniel said:
If your battery life was bad, is either because you restore apps from either smartswitch or a backup, or because of the proximity sensor bug. Otherwise battery life should be good, unless you have apps that are draining a lot of battery. I had 10h SoT on my exynos variant and battery was not charged to 100 was at 94%. I will suggest you to look a the battery optimisation guide here, and also the exynos battery life thread.
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If I do a factory reset what should I restore? Apps from Gmail or should I manually install each app again?
sruel3216 said:
If I do a factory reset what should I restore? Apps from Gmail or should I manually install each app again?
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I manually install all of them, I did not restore anything from any backup
aromerodaniel said:
I manually install all of them, I did not restore anything from any backup
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Click to collapse
Ok thanks.
I restored some stuff, but considering just doing a factory reset then loading everything manually. This is my current battery
sruel3216 said:
Ok thanks.
I restored some stuff, but considering just doing a factory reset then loading everything manually. This is my current battery
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Which software update do you have ASBA or ASCA?
aromerodaniel said:
Which software update do you have ASBA or ASCA?
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ASBA Feb 1 security patch.
I have the unlocked snapdragon for USA
sruel3216 said:
ASBA Feb 1 security patch.
I have the unlocked snapdragon for USA
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Click to collapse
Well there is proximity sensor bug, that does not allow the phone to go on deep sleep after you make a VoIP call (whatsapp or facebook call) this is solve by rebooting the device, but also the new software update aahas fixed this issue.
aromerodaniel said:
Well there is proximity sensor bug, that does not allow the phone to go on deep sleep after you make a VoIP call (whatsapp or facebook call) this is solve by rebooting the device, but also the new software update aahas fixed this issue.
Click to expand...
Click to collapse
I thought the SD version didn't have the proximity bug issue?
Still waiting for the unlocked update

I have a dead Samsung S8, can I fix it?

This post is probably hardware related, so I hope it's not that irrelevant here.
I have a Samsung Galaxy S8, SM-G950FD that hasn't been used for over a year because it's gone completely dead. Won't turn on, not even battery charging display, i tried charging it overnight and still no results, the battery doesn't even get warm. I've tried bringing it to a service center but they don't fix Samsung phones, so I decided to try fixing it by myself.
The first thing I do is I check the battery, it does look weird but I'm not sure if it's the main problem. Here's the image of the battery.
My question is, could the battery be the reason the phone won't turn on? or could it be other things such as my charging port, or the display screen itself?
Again, sorry if I made a mistake somewhere, thanks for any help.
Replace the battery. Go from there.
It won't boot without a good battery.
blackhawk said:
Replace the battery. Go from there.
It won't boot without a good battery.
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Thank you! I'll definitely do that, but I got a question, can a phone be turned on by using it with a charger without having a battery attached?
storhaugey said:
Thank you! I'll definitely do that, but I got a question, can a phone be turned on by using it with a charger without having a battery attached?
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No.
Arealhooman said:
No.
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Alright, Thanks so much!
storhaugey said:
Thank you! I'll definitely do that, but I got a question, can a phone be turned on by using it with a charger without having a battery attached?
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Click to collapse
The charger might provide enough current to open the boot menu. Booting uses a lot more current.
blackhawk said:
The charger might provide enough current to open the boot menu. Booting uses a lot more current.
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Click to collapse
hm I very much doubt it, pretty sure you need a battery.
https://forum.xda-developers.com/t/...t-battery-only-by-connecting-charger.1634648/ perhaps I am wrong
storhaugey said:
This post is probably hardware related, so I hope it's not that irrelevant here.
I have a Samsung Galaxy S8, SM-G950FD that hasn't been used for over a year because it's gone completely dead. Won't turn on, not even battery charging display, i tried charging it overnight and still no results, the battery doesn't even get warm. I've tried bringing it to a service center but they don't fix Samsung phones, so I decided to try fixing it by myself.
The first thing I do is I check the battery, it does look weird but I'm not sure if it's the main problem. Here's the image of the battery.
My question is, could the battery be the reason the phone won't turn on? or could it be other things such as my charging port, or the display screen itself?
Again, sorry if I made a mistake somewhere, thanks for any help.
Click to expand...
Click to collapse
upload image on http://pomf.cat, imgur is blocked at my school
$cronos_ said:
upload image on http://pomf.cat, imgur is blocked at my school
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Click to collapse
Lol it also blocked for me, imgbb.com is best
storhaugey said:
Thank you! I'll definitely do that, but I got a question, can a phone be turned on by using it with a charger without having a battery attached?
Click to expand...
Click to collapse
some phones prevent it from turning on while the battery is removed even if it is on a charger
$cronos_ said:
some phones prevent it from turning on while the battery is removed even if it is on a charger
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Click to collapse
Not sure. There may be fail safes. They're designed to operate from the battery.
$cronos_ said:
upload image on http://pomf.cat, imgur is blocked at my school
Click to expand...
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here's with imgbb link
blackhawk said:
Replace the battery. Go from there.
It won't boot without a good battery.
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Click to collapse
update,
I changed the battery with a new one, it still doesn't turn on, nothing shows on screen.
I guess it has something to do with the motherboard then.
storhaugey said:
update,
I changed the battery with a new one, it still doesn't turn on, nothing shows on screen.
I guess it has something to do with the motherboard then.
Click to expand...
Click to collapse
Does it respond when the charger is plugged in?
blackhawk said:
Does it respond when the charger is plugged in?
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Click to collapse
no, it's same as before.
now I'm trying to charge it overnight with a cable connected to pc, hope something happens tomorrow
storhaugey said:
no, it's same as before.
now I'm trying to charge it overnight with a cable connected to pc, hope something happens tomorrow
Click to expand...
Click to collapse
If the port board fails it won't charge. Could that be what started this?
blackhawk said:
If the port board fails it won't charge. Could that be what started this?
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shouldn't new batteries always at least have some charge when they arrive?
$cronos_ said:
shouldn't new batteries always at least have some charge when they arrive?
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Click to collapse
If they are good they have to unless they reached their auto shutdown voltage. Typically they have a 50-70% charge.
Hell you can get a used N10+ for $300 and up. It's a quantum leap in performance.
Do you have any indication it is booting? Like do you feel it getting warmer? If you do it could be a bad screen. I have an S8 with a bad screen and it's just blank but I can tell it's booting because of it getting warmer and vibrating. I think the S8s are known for having the screens fail. I can get a replacement screen on Aliexpress.com for less than $100 but it would only be worth it to me if I could put on a custom ROM. Unfortunately, bootloaders on snapdragon S8s can't be unlocked and probably never will be. So it's not worth it and I guess it's going to the recycler.
The irony is that my old Exynos S7 is happily running a custom Android 12 ROM and doing everything I need it to do. So if you are in the market for a super cheap unlockable Android phone you can't go wrong with an Exynos S7 running Custom Android 12 ROM.
I just bought an Exynos S10 off ebay which will be replacing my S7. Qualcomm/Samsung can go pound sand trying to force us into upgrading our phones every few years.

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