yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S7 Edge Questions and Answers] King Mustard:
I think I have found a bug in Android 6.0.1 on my Samsung Galaxy S7 Edge.

Put all four volume bars (Ringtone, Media, Notifications, System) at full.

Connect your phone to your car via. Bluetooth.

Put some music on (any app will do, they should all work the same).

Make sure all four volume bars are still full.

Open Google Maps and make the voice say something.

On my phone, the Media volume (that controls both music and voice notifications) turns down to around 50/60% every time s/he speaks.

It's very annoying!
[Galaxy Note 4 Q&A, Help & Troubleshooting] MrLarner:
Hi guys, hope someone can help.

I've had my note 4 just over a year now and not had any problems at all. I've always had notes 1 2 and 3 and now 4.

Never bothered rooting the note 4.

So..... out the blue my phone starts restarting and freezing regular. I'm talking 15-20 times per day.

Got no idea why but got so frustrated that I restored phone back to factory settings and it's still doing it.

Anyone know why this might be.

I'm 90% sure it's not memory as I have a 64gig memory card in it. And don't actually have many apps downloaded.

I've cleared all cache as well via apps and also via the volume up power and home key method.

Please tell me someone knows what the problem is here as I did searches on Internet and many are having the samended problem.
[Galaxy Note 4 Q&A, Help & Troubleshooting] MrLarner:
After doing some research on older threads. I noticed few mentioning a fix when their removing their sim card so I gave this a try with little hope and amazingly it's worked. I've opened up around 10 different apps and really straining the phone. Not 1 force close, freeze or reboot.

So what on earth is going on here.

What is my EE chip doing to cause these freezes and restarts.
[Galaxy Note 4 Q&A, Help & Troubleshooting] one-option:
excuse me

What is your Note 4 model ???

Exynos or Snapdragon ??!!
[Galaxy Note 4 Q&A, Help & Troubleshooting] MrLarner:
Not sure where I get this info. My phone is not rooted.

But under model it says....... SM-N910F
[Galaxy Note 4 Q&A, Help & Troubleshooting] MrLarner:
Do you know what the problem might be?
[Galaxy Note 4 Q&A, Help & Troubleshooting] MrLarner:
Now for the really weird part.

As stated, when I remove the sim card the phone works perfectly. No lag or freezing or restarts.

So I don't some more investigating and added the sim back and removed the SD and still no lag freeze or restarts.

What on earth could be causing this issue. Whenever I have I have my sim and SD in together the phone goes wild and won't stay on without freezing or restarting.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Deleted member 1198227:
Try deleting everything from microsd, and reformat it in other format, eg fat32
[Galaxy Note 4 Q&A, Help & Troubleshooting] MrLarner:
It's getting more and more strange. If I have both SD and sim card in the phone then it constantly freezes and then restarts but If I remove 1 of the 2 then the phone is fine. No problems with just sim or just SD. So I'm under the impression now that the sim and SD between each other are causing problems.
[Galaxy Note 4 Q&A, Help & Troubleshooting] senectus:
N910G (stock, unrooted) here, exactly the same thing.

So I factory reset it, now and its still doing it. with or without the sim or microSD

I also notice that provided i keep the screen active it operated fine, the moment i let it sleep i started getting issues.

the device is pretty much a semi brick now :(
[Galaxy Note 4 Q&A, Help & Troubleshooting] iamfoesho:
I think I found a solution to this issue since my phone has been experiencing the same thing. I would credit the OP that posted this solution as soon as I find where I got the information from. But anyhow, much like your phone my Note 4 N910T started to lockup/freeze/reboot. This lockup and freezing would occur mostly when I power my screen on and proceed to unlock it.

Step 1. Download Wake Lock from the Play Store

Step 2. Enable Partial_Wake_Lock and set it to number 4

Step 3. Enable Auto-Start

This has fixed my issue with the random freezes, but my battery drains slightly faster.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Dijkertje:
I have been having issues lately, too! Also a N910F model.

A couple months ago the device was acting weird and being real slow with loading photo's and stuff that was stored on the MicroSD. So I removed the MicroSD and the problem seemed to be gone.

After a couple weeks the device began acting like the Topic Starter is describing. Note, I was running custom roms and thus was rooted. So I thought I messed something up. So I backed everything up, wiped the Note 4 completely with TWRP, then I went to install the latest odin *.tar.md5 file and the device seemed to be acting normal again.

Then after a couple days it would act up again!!! So I decided to keep the Note 4 off for a while and use my Galaxy S5 instead I still have laying around. This means I switched the SIM card from Note 4 to S5.

But then I missed the bigger display and the S-pen. So I tried again.... doing a full wipe via the stock recovery and install, again, the latest odin tar file. That is running fine for like 3 days now so I hope it will stay finally okay now.

If it starts acting up again I might temporarily use the Galaxy S5 again or start thinking about buying a S7 Edge or wait for the Note 6 to pop up..
[Galaxy Note 4 Q&A, Help & Troubleshooting] MrLarner:
UPDATE:

due to my 13month old note 4 constantly freezing and restarting. I decided to root the phone and also add a 32gig memory card to try and free up some space. Also bought a new genuine Samsung battery after believing my battery was causing issues.

Well I was wrong.

Battery has been changed, moved lots of apps across to SD and also cleaned up loads of junk yet the freezing and restarts continue to happen.

I have no idea what it causing these freezes and restarts but I'm starting to lose patience with this phone.

Here are some pics....[/URL][/IMG]

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Anyone have any ideas???
[Galaxy Note 4 Q&A, Help & Troubleshooting] MrLarner:
took my phone to a shop and the guy told me it's defo the mother board, he said many note 4 owners have this problem after a year or so, but also told me that samsung give out a 2 year warranty, but the problem is, i'm now rooted, so not sure what to do now.

phone is restarting and freezing every 10mins and i'm on the verge of smashing the thing off a brick wall.

if anyone thinks they can help, please get back to me asap.
[Galaxy Note 4 Q&A, Help & Troubleshooting] senectus:
Well I got sick of it and traded it in for a Nexus 6p (with full disclosure of the problems).

While I miss one hand mode and the stylus and the removable battery, God damn but the Nexus 6p craps all over the note 4 for performance! This thing is super snappy!
[Galaxy Note 4 Q&A, Help & Troubleshooting] yesteryearisoverhere:
There's not much else you can do I reckon. Either let the guy repair it or repair it yourself.

That sucks though, I hope it doesn't happen to me. :eek:
[Galaxy Note 4 Q&A, Help & Troubleshooting] MrLarner:
problem is, he told me he cant fix it, as a new motherboard will cost me almost the same amount as a new note 4. not worth doing.

he basically told me to unroot my phone and put original rom back on and just take it to Samsung and prey they don't check it.

not sure what Samsung procedure is but i got a feeling its not going to end well.
[Galaxy Note 4 Q&A, Help & Troubleshooting] oggythedoggy:
Hi I have the same problems with my SM-N910F, is that info about 2 year warranty from Samsung is true? Because if is true I can try to replace my phone.Is nightmare I was trying everything factory reset, but nothing help.Still doing thant swich off, freezing.
[Galaxy Note 4 Q&A, Help & Troubleshooting] MaPetti:
Mine is a N910C model (Exynos) and is totaly innoperate. After turn it on it shows the first logo screen and freezes. Sometimes it keeps looping on this screen and not go ahead. I've tryed new firmware, resets, wipes and nothing. Is there someone that knows what I shoud do besides throw it away?
[Galaxy Note 4 Q&A, Help & Troubleshooting] meli04:
Having them same problem with my note 4 I've had it for a year and 3 months now. About ready to dump it in the toilet! What does it mean to have your phone rooted? Really want to fix it as a new phone is not in my budget
[Galaxy Note 4 Q&A, Help & Troubleshooting] Keyouta:
My phone is freezing and restarting ever since the 6.0.1 update failed once, I got it to go through finally but it hasn't been good. I've tried erasing and loading new OS through smart switch and it's still having problems. Should I try a custom firmware?
[Galaxy Note 4 Q&A, Help & Troubleshooting] 3kgt:
Sadly as written i wont get a N4! Hopefully i can pay extra to get an S7 Edge?! or S7..

But if i was you i would not by any N4 for now..Buy something cheaper and wait for S8 or N8! I will do so..Cause today there is No damn phone wich have 3 most important things for me.

1: S Pen

2: Wireless charging

3: Big screen.

Plus side is IR, Exchangeble battery, Amoled. S7 have all those but Spen.
[Galaxy Note 4 Q&A, Help & Troubleshooting] debernardis:
People with these problems, try this:

Install Dummy File Generator from https://play.google.com/store/apps/details?id=jp.nomunomu.dummy

Run, push "generate (full)". This will fill your internal sdcard with big file(s). Most likely, it will stop and crash in the work.

Restart it (if it crashes at start, swipe it out from recent apps and try again), do that again until completely filled.

Now push "delete all of dummy files".

Repeat the fill/delete process until it completes without errors, and then 3-4 times more.

Now see if your device works better, and report. Mine did :laugh:
[Galaxy Note 4 Q&A, Help & Troubleshooting] 3kgt:
Thanks for the tips. But could you explane how the F****k this would help and what dose big files and deleting them have to do with mmc read failure? :silly: :confused:

Mine is so F*ked upp that i get read mmc fail at start, most times i dont even get the chance to get into down/reco mode.
[Galaxy Note 4 Q&A, Help & Troubleshooting] debernardis:
I reminded I did the same for one of my previous devices, after reading an xda post (I think) and worked. Did it again in my note 4 some hours ago, and now it's reborn. Don't ask me why it worked but it did. Be aware my phone was only freezing and lagging like mad, wasn't at the point to refuse booting yet.
[Galaxy Note 4 Q&A, Help & Troubleshooting] C_O:
Does anyone knows if there is any app for controlling the ram usage? I faced all these problems with freezes, restarting and mmc failure in three Samsung Note 4 devices. Last night when i restored my apps back to the phone. I noticed by mistake that Fb and Mozilla used 2.7gb of ram. And my Note 4 show that System Ui stop running and after that freeze and restart. I removed fb and after that no restart
[Galaxy Note 4 Q&A, Help & Troubleshooting] zedonetx:
Hi, i bought my note 4 from usa, and using it in turkey for 2 weeks. It is unlocked gsm but verizon model. I had lagging and freezing and rebooting issues = The Problem.

1.i tried to change Network modes to global from lte/gsm/umts and lte/cdma, vicea versa. The problem still continues.

2. I took of microSD. The problem still continues.

3. I turned off mobile internet. Since 45minutes, there is no problem. I will wait and see
[Galaxy Note 4 Q&A, Help & Troubleshooting] 1337SereniTyx3:
Is it still covered by warranty?
[Galaxy Note 4 Q&A, Help & Troubleshooting] :
Download the app "wake lock" from the play store and set it to level 4. Slightly higher battery usage but fixes all these issues
[Galaxy Note 4 Q&A, Help & Troubleshooting] 3kgt:
Took the phone to Samsung service. First thing they do they blame it on Water damage! Cause there is a water marker in the phone wich was red! But after loong tak they will look at it as im sure that my phone is not water damaged! So be carefull and see the marker before service
[Galaxy Note 4 Q&A, Help & Troubleshooting] woldranger:
Were you having all the issues reported here, ie was it lagging, freezing AND restarting on a regular basis? How about when it came to rebooting - did you have problems with it booting up into the OS at all?

Anyone else tried this to any effect?
[Galaxy Note 4 Q&A, Help & Troubleshooting] debernardis:
I had freezing and lagging, continuously. Restarted albeit infrequently, without problems in rebooting.
[Galaxy Note 4 Q&A, Help & Troubleshooting] woldranger:
Ah right, thanks for letting me know. So I don't think it was anywhere near as bad as most of ours have ended up - glad your fix worked for you :) Just out of interest, did you select "internal memory" or "internal sd" for your dummy files? I've ran it 3 times so far with internal sd. I'll give it a restart and see what goes on....
[Galaxy Note 4 Q&A, Help & Troubleshooting] debernardis:
I am under the impression that both options refer to the same internal mmc. So, I used the first.

Btw, I found the original XDA reference where I took this: http://xdaforums.com/galaxy-s3/help/galaxy-s-3-freezing-5-mins-50-freezes-t2122346/post37976063
[Galaxy Note 4 Q&A, Help & Troubleshooting] kevalpatel92:
Great search man ! Looks promising i have read that original galxy s3 thread you have provided i think they were getting same problems as we are getting here.Will try and let you know itf it works or not? f**king samsung want us to buy their new devices by creating this kind of problems with new updates !
[Galaxy Note 4 Q&A, Help & Troubleshooting] woldranger:
I gave it a try. Well, lots and lots of tries. But eventually after another reboot, the phone started playing up again, where it wouldn't boot straight into the OS. It was worth a try.
[Galaxy Note 4 Q&A, Help & Troubleshooting] kevalpatel92:
SO i gave it a try but still confused with process to follow. I ran app first time the app crashed after 5 min , kiiled app as suggested then opened again it doesnt show internal space in the app below and app gets crash every time ! what should i do? After first fill freeze can table to resume app gets crash every time
[Galaxy Note 4 Q&A, Help & Troubleshooting] debernardis:
Erase data and cache of Dummy File Generator, start it again, erase all dummy files if any.

Then restart the file generate/erase process.
[Galaxy Note 4 Q&A, Help & Troubleshooting] kevalpatel92:
After successful generating dummy files should i delete those dummy files?and how many times should i genrate dummy files after 1 successful genration?
[Galaxy Note 4 Q&A, Help & Troubleshooting] debernardis:
Yes you've got to delete them immediately, and yes you should do that several times, until it doesn't freeze any more in the work, and then some.

Remember to cancel the dummy file each time.

Reboot after last time you do the cycle.

Then report here your results. Maybe it was good only for me, maybe it's a a solution for others too, we'll know only after your reports.
[Galaxy Note 4 Q&A, Help & Troubleshooting] kevalpatel92:
its not working for me.After 2 successful file generation without any freezes i have used my phone but it freezes at some points especially when I wake up my phone to use it freezes at that point only after that it works smooth i have noticed that freezes happen less compare to earlier.
[Galaxy Note 4 Q&A, Help & Troubleshooting] zedonetx:
there is no warranty on this refurbished item i bought on ebay.

---------- Post added at 11:11 PM ---------- Previous post was at 11:05 PM ----------

hi man

yes i did as you said. it works like a charm now. i tested the battery usage. wakelock software used %4 battery while phone is idle for whole night on wifi from %100 to %77. i slept 9 hours. it is pretty good. thanks a lot.
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
After 3 days of installing roms on my note 4 that restarted and was laggy, mainly after sleep. I did what someone suggest here and installed wakelock, it fixes the problem, but tells me there is something broken in the samsung processor in this phone. After all my reinstalls and soft bricking, I finally got a stock rom of MM reinstalled.

However if i restart my note 4 now, it simple turns off.

Anyone have a suggest how to fix this annoying problem. I did have twrp installed but think it is back to stock recovery now. Happy to have the phone back for now and my opinion of samsung products these days. I will not buy another.

Happy New year
[Galaxy Note 4 Q&A, Help & Troubleshooting] Gurpreetswe:
hold volume up + power and boot in recovery , clear caches or try factory reset ,

---------- Post added at 07:38 PM ---------- Previous post was at 07:27 PM ----------
[Galaxy Note 4 Q&A, Help & Troubleshooting] pittas:
I bought note4 2 times.

My first one had a non responsive back button, samsung did not want to replace it or fix it, they kept telling me that its functioning.

I sold it after some months, and got me a new one that after 2 months started doing random reboots 2/3 times per day.

I was kinda fed up by samsung so i tried xiaomi mi4/mi note pro and xiaomi max ever since.

All 3 phones together cost me about 700$, around note4 retail price.

They all work like they should, without a single hickup.

Recently i got the spen nostalgia so i was thinking i would buy a second hand note4. And then i read about this.

No more samsung for me, it seems like the note7 fiasco was actually the tip of the iceberg.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Gurpreetswe:
Those who have note 4 deep sleep issues and lag, using wake lock to keep your device awake ?? i found the solution when i tried to use POWER NAP on htc one x android 5.0. My htc didnt wake up untill i EXCLUDED Android system from power nap :D. So I tried the same thing on note 4 , go to Settings >Battery > battery usage >options (top right corner)> select all apps, find Android System and Gallery and turn off optimize battery usage for both. Please test it and report if that helped :) we can also try to exclude more system apps if tht doesnt help for you. For me , I tested it for one day without wakelock, Not a single reboot ., but those apps which were sleeping took few secs to open , but after that , they all work flawlessly .
[Galaxy Note 4 Q&A, Help & Troubleshooting] Gurpreetswe:
My settings

https://s24.postimg.org/pf3fjmpxx/image.png
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
Thanks Gurpreetswe never good idea to disbable these apps, shall let you all know if it works on my phone. Wake lock is good but uses more power and cannot get it to start at boot.

RE my phone not rebooting. Plugged it into pc to do smartswitch backup. The phone reboot halfway thru. That seems to have fixed the reboot problem, as it now reboots, strange, but hay if its fixed i am happy.
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
Hi reporting that settings the android system and other apps as not optimized as per above post has work on my note 4, it can be a tad laggy but not like it was, so happy its working.

Its strange as i installed rom kitkat on this phone and the same problem happened, not sure if you could tweak apps on kit kat as to not be optimized. but the same thing happened on kit kat.

Anyway the above tweak works so no thrid party wake lock, so just a matter to see what the battery life is now. I dont think it will make any difference.

Thanks for the info, i am sure there are a lot of note4 uses that would like to here this from what you read on the web.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Noteiya:
I am having the same issues. Phone keeps restarting and hangs constantly. Hell, the phone restarts while it's restarting. Also, the camera is not working some 'MediaServer' is not responding.

I tried the factory reset and the above wake lock method but nothing seems to work.

Some permanent solution for a semi brick phone.
[Galaxy Note 4 Q&A, Help & Troubleshooting] DjStep:
Verizon Note 4. I too have tried factory reset, different batteries, removing SD card, and installing Wake Lock app on setting 4. Problem still not solved

Phone still crashing and then goes into never-rending reboot cycle

Will not fully boot unless I plug back in to a power source

I sure hope someone solves this. My wife and I have the same phones, and both experiencing the exact same issue (Verizon Note 4 N910V, Android 6.0.1, Android Security patch 1 Dec 2016. Both started experiencing the exact same issues at the same time)
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
Looks like i spoke to soon. Phone started playing up again. Very laggy coming out of sleep. Then all apps are very slow to respond. IS there anyway to diagnose this further.

I have the; not optimised apps the same as yours in the above post Gurpreetswe. My phone did create a bug report which i have, but it makes no sense to me..

Frustrating bloody phone this note 4.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Lily2017:
Hi, just like the other feeds. I have the same problem. The only thing is that when i had lollipop 5.1.1 installed i didn't have the problem of restarts, freezes and lags. It did turn off for good once or twice. So i would remove the battery and put it back in. But then one day it just didn't turn back on. I took it to a tech. Person . He intalled Marshmellow 6.0.1.. and that is when the freezes and restarting and lagging really began. It happens several times a day. Every frustrsting.

I research some and did the "Wipe cache partition". Same old, same old. HELP. I have the SM-N910T.
[Galaxy Note 4 Q&A, Help & Troubleshooting] callumbr1:
I had exactly the same problem you describe here. Tried everything, phone kept constantly rebooting even during rebooting. Had to plug into power source to get it back on. Took it to Samsung they said the battery is fine and it's software which I knew was bulls#!t. Got a new battery off ebay for £4. Works like a charm now like a new phone.
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
use smart switch and re install rom using emergency recovey, plenty of info on the web about it.

I spent 3 days sorting mine out, then it starting playing up again. Was hoping to use battery optimizer to tweak it to avoid this problem but dont understand android OS enough. Simply just want a phone that works,
[Galaxy Note 4 Q&A, Help & Troubleshooting] debernardis:
You know, this works very well, thank you! My note 4 is flying again :victory:

I excluded from battery "optimization" some other apps, which I thought could bring instability when compromised: Air command, Android ftp, Android Auto, Better open with, Gboard, play music, spen direct, maps, simple radio, Android system, SuperSU, and 3 that seem to share the phone app logo. I'm currently writing on a much quicker phone. Hope that it lasts :D

(The repeated dummy file generation was still necessary in my case, because before it my device had very frequent lags, and after several dummy cycles they were gone; but still having trouble in waking up sometimes.)
[Galaxy Note 4 Q&A, Help & Troubleshooting] Gurpreetswe:
OK. Try to turn off optimization for all apps + turn off doze mode. And test again. If the problem persists, clear partition caches . You can always download the doze app from play Store.
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
Cannot see an option to disable doze mode only can disable every app individual?
[Galaxy Note 4 Q&A, Help & Troubleshooting] Gurpreetswe:
go to settings >battery>details (under apps power saving) , turn it off, try it , hopefully it will resolve the issue :(
[Galaxy Note 4 Q&A, Help & Troubleshooting] kevalpatel92:
Nop its not working ! if its doze mode that creating problem then people with 5.0.1 and 4.4.4 should not have issue with lagging !
[Galaxy Note 4 Q&A, Help & Troubleshooting] debernardis:
I think we've got a number of different problems.

Each one adds its quota of lags and freezes.

After revoking battery optimization to those apps my phone became very notably quicker and wakes up promptly.

After several dummy file generator cycles, freezes were gone.

I still have to a activate partial wake lock to reduce Android Auto disconnections.

So, I think it's wise to try them all in order to revert the bad effects that Marshmallow exerted on our phones.