yashsingh1/xdaforums huggingface dataset:
[Galaxy Note 4 Q&A, Help & Troubleshooting] nicholes:
after all its still mysterious for me what cause random reboot freeze(emmc failure, hardware, or software or Samsung purposely did that) some solved it just by replacing battery while many of us are using wake lock some change their setting in developer mode( i dont remember what setting was that)

Meanwhile motherboard from aliexpress has been dispatched
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
Yeah I have no doubt whatsoever that it's entirely a Hardware problem - No I don't think for a minute that Samsung did this on purpose - I suppose that it's possible that software could have revealed the Flaw in either the parts or the design of the Device - But it's not the fault of the software - It's definitely a Hardware issue... anything else is just an unwitting offshoot.. That is my 2 cents but I firmly believe in my opinion - lol

But Good luck with the replacement of the motherboard! ?

Sent from my SM-G955W ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] dark_1ca:
Hey guys been reading this thread since I've been having issues with my note 4. Its w8 canadian model. Sorry this is lengthy but I want to explain thoroughly.

Started back in august when my phone died and wouldn't get any power no matter what. After about a week I decided to disassemble it and looked at the logic board through a cheap usb microscope. I didn't spot anything obviously wrong. Put it back together thinking thats it time for a new phone and lo and behold it turned on. Worked decently for about 1-1.5 months. It would still restart if it warmed up too much but I would be able to get it back up and running.

I noticed that once android booted up the phone would often heat up alot. The only way I knew it would be stable and back up was after booting android and waiting a few minutes I would get a notification for how many ever updates I have. Once I got that notification the phone would remain stable. If it didn't come the phone would reboot until that exact notification. Its the only thing I noticed that made it work.

About 2 weeks ago it died again and same symptoms. No power. Wouldn't boot. Came across this thread and others like it and was able to get it to power up with the freezer trick. It hasn't been stable since. I've flashed stock rom via odin a few times. I can get it to run stable for a few hours max. I ran brick bug and it says sane chip. I even rooted it last night via cf auto root to test memory. It didn't detect any errors and passes.

Question is can I still have bad emmc chip? All the symptoms in this thread fit my phone but I'm confused after the test. And the reboots are random. I can play music for 2-3 hours and it may be fine or be on chrome. It will just randomly reboot. Even if its completely cool. Bad emmc or maybe something else?

I know I'm going to need a new phone but I need to know whats up with my note 4. I paid good money for it and its been 2-2.5 years only. I've had to rely on my old N900 (thats Nokia N900) when it dies just so I can talk/text. It seems like the phone can run fine and shutoff/reboot randomly when doing the same tasks. I've had it reboot randomly sitting there with power saving mode and no foreground apps running.

I have original battery and while its definitely used it doesn't have any bulges and a knockoff battery I bought locally back when it first died. Both batteries make 0 difference. Is samsung still selling original note 4 batteries in good condition? I had bought an anker last year from amazon but returned because it arrived dead.

Any help is appreciated. Oh and wake lock really doesn't make any noticeable difference. I've factory reset it and installed nothing but wake lock, signed into google and samsung accounts, and chosen not to restore any sort of backup and phone will still do the same thing.
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
Try CPU On from the store - Here's a screen shot and you can see that it's been on for roughly 158 hours and my Note 4 very definitely has the emmc Failure.

Sent from my SM-N910W8 ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] dark_1ca:
Please explain how it shows you clearly have emmc failure, because most of the uptime is at 300 Mhz?
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
Because - If I Reboot the phone - It:

a) Will not Boot.

b) If it does Boot (partially) Then I see the Red Text on the Screen and the phone wants to go into Download Mode.

c) If the phone does shut off - I have to put it in the freezer.

d) Uptime is probably the result of the app that I'm using to stop the phone from going into deep sleep.

Sent from my SM-G955W ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] dark_1ca:
Installed the app. Had to reflash rom cuz I bricked my phone trying to use kies upgrade. Took a while to get it to flash. Anyways, is there a way to keep the app running? BTW I found it by searching cpu spy. Installed both regular and plus free.

Getting back to the phone. What confuses me is that I've never had any errors like write fail. Phone will be on and just shut off like power going out. Think of an old tv when you turned it off the screen had that sort of, shrinking flash effect?

Sometimes the phone is on and I go to unlock it and it doesn't respond. Is that deep sleep? Its happened while running cpu awake. Dont know if phone shut off or went into deep sleep when that happens.

---------- Post added at 06:54 AM ---------- Previous post was at 06:47 AM ----------

Hey what temp/time did you use for baking your mobo?
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
Yeah CPU Spy is not the app that I was talking about - CPU Spy is just the app that I used to show you how long my Note 4 was running without a Reboot ?

This is the app that you want

View attachment 4303326

Sent from my SM-G955W ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] logosA:
I think the next step is to consider using a custom rom.

Talking about KIES, made me understand you are talking about stock rom, am I wrong?

Custom roms are lighter, more customazable and in our case the only solution I am afraid .

I have a broken Note 4 as well (N910 F) since last year .

Sinse January this year I have left behind stock roms, (although I am constantly updating the sourses of repair stock rom and use it any time in trouble).

I have tried all custom roms and have find out that AICP rom by _mone and latest unified Lineage rom for all variants of Note 4 , is the answer for our problem.

Of course its not the final and ultimate solution, only replacing of the motherboard is.

Its definitely a hardware isuue and cannot be fixed with a software, but it keeps you going for now.

A lot of people are trying to think its not the case for their phones. It is but in different stages of the problem

Since January I am on a custom rom, and my phone is still up and running, very well I must say.

If you like take a look here and don't hesitate to ask if I can give any help

https://xdaforums.com/note-4/snapdragon-dev/rom-lineageos-14-1-t3536401

access the thread from a pc , look for user [MENTION=6005084]ripee[/MENTION]. In his signature look for the latest rom available for the version of our phone.

He is doing a great job for all of us.
[Galaxy Note 4 Q&A, Help & Troubleshooting] GamerBoy85:
Same issue is with my Note 4 ... No emmc error random restart often freeze and restart on lock screen ... wake lock does'nt work for me also tried changing battery but same effect on both ... I have korean note 4 N916L ... after research i have found a solution emmc reballing ... if you know a repairer who can do bga reballing then take your phone to him/her ... Maybe it'll fix well i'll buy another phone and then try emmc reballing

---------- Post added at 10:06 AM ---------- Previous post was at 09:43 AM ----------

Do you get emmc error ?
[Galaxy Note 4 Q&A, Help & Troubleshooting] logosA:
I have all the symptoms

-My phone is only booting with an external SDcard with an unbrick image in it, otherwise no boot

-red letters in boot

-emmc failure

-kernel panic

I dare say I am at the latest stage of failure.

And dispute that, I have my phone working great.

Of course I am very careful when it comes to things I do with it.

Every time I want to flash a rom, I keep it freeze before ( I am now using deep freezer -20 c for 5 minutes, in a zip bag without card or battery) and in the normal freezer during first boot up.

I use '' simple reboot'' app to reboot or soft reboot the phone.

I am not playing games that could heat up the phone and make more damage in the board

I really read all the info of other users in a thread before trying to see if the rom is causing problems to phones with no problem. If it does then it would be a disaster for mine , so dont even try it.

ETC

:)

It is a challenge for me to keep it running.

I don't have any guaranty remaining for it so I will keep it as long as it is alive.
[Galaxy Note 4 Q&A, Help & Troubleshooting] GamerBoy85:
Well i think i found solution ... try emmc reballing there are many videos on bga reballing. I'll try this when i get another phone ... and related to your problem it's a hardware issue so my suggestion is don't waste your time on installing software.
[Galaxy Note 4 Q&A, Help & Troubleshooting] logosA:
Because I have read every possible post, posted in XDA and other related forums about that emmc failure on the Note 4 , I have come to this conclusion:

It was one(or more maybe) motherboard line production with faulty parts that has caused this problem.

Thousand of Note 4 had been affected with that. The motherboard is faulty and not the emmc chip. Where contacts are made , when overheated, is causing the problem.

In Lineage thread there is a user who even changed the emmc chip in service. After 10-15 days the problem was back and this time the whole motherboard had to be replaced so be able to get back to life.

I hope your finding really help you solve your problem, but keep a little doubt about that
[Galaxy Note 4 Q&A, Help & Troubleshooting] GamerBoy85:
Can you give me the link about the thread where you read about emmc chip changing ... LG also has the same issue with their devices emmc connections broke with the PCB and then they stuck in bootloop. Well i'll try emmc reballing and i'll update if i succeeded. Also S7 and S7 Edge has the same motherboard issue and now i've also heard about S8 that this phone also has the same motherboard problem.
[Galaxy Note 4 Q&A, Help & Troubleshooting] logosA:
ask this user:

https://xdaforums.com/showpost.php?p=73841794&postcount=4171
[Galaxy Note 4 Q&A, Help & Troubleshooting] Saki01:
Do not use 195- 200°C for 8 min. I have overbaked mine to death. I tought the same temp. I used recently for graphic card will be good for phone MB. Obviously it is not. [emoji20]

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[Galaxy Note 4 Q&A, Help & Troubleshooting] dark_1ca:
Hey whats the procedure to flash lineage os. Do I flash bootloader, then copy lineage rom files onto phone and then from the recovery there will be a new option to flash lineage rom??

Also are you comfortable disassembling your phone? I had the idea of replacing or adding more thermal pads to help with cooling. There are 2 in the phone (or at least on mine). One im assuming is for cpu/soc and the other I have no idea. I have a schematic for c, h, cq models and the area which my phone really heats up is around chips u901 and u1100 (they are in the same area on opposite sides of board. )

Thanks thats the temp I was thinking. Wondering how [MENTION=1779953]Hagis[/MENTION] did it. I was under the impression the temp needs to be a minimum for solder to flow. Wish I had a hot air rework station. Also does anyone know where on the board is emmc chip?
[Galaxy Note 4 Q&A, Help & Troubleshooting] logosA:
YOU CAN DO THIS:

Downoload BL and CP recomented for your phone, you can find this in [MENTION=6005084]ripee[/MENTION] 's singature in Lineage rom thread

download TWRP for your phone

put your phone in download mode

use odin and flash at the same time BL, CP and TWRP like this:

put BL in odin's BL BOX

PUT cp IN ODIN'S CP slot

PUT TWRP in odin's AP slot

make sure autoreboot is NOT checked.

After odin has flashed all of them and 'PASS' is written, unplug your phone from pc

take off batery and wait for 10-15 sec

Put battery back in and press and hold power + home + volume UP so you get in recovery

in wipe menu, advance wipe , WIPE everything(dalvik, cashe, system, data and internal memory)

go back in wipe and format DATA

Connect your phone in pc and copy rom and Gapps(BeanGapps are suggested) in internal storage

In install menu flash rom

wipe cashe and dalvik

flash Gapps

reboot system

**detailed process about flashing a lineage rome described here:

https://xdaforums.com/showpost.php?p=72405639&postcount=225

***dev's suggestion about that method

https://xdaforums.com/showpost.php?p=71645185&postcount=1640

TIP 1

YOU CAN FIND latest BL and CP for your phone using SAMFIRM , an aplication (windows) which can let you download the latest stock rom for your phone in the 4 files set , also called repair stock rom (BL, CP, AP, CSC)

LOOK HERE FOR MORE INFO:

https://xdaforums.com/showpost.php?p=73019818&postcount=392

I MADE IT FOR nOTE 2 , but its the same for all samsung NoteS series

source:

https://xdaforums.com/galaxy-tab-s/general/tool-samfirm-samsung-firmware-t2988647

Tip 2

TWRP :

https://twrp.me/Devices/Samsung/

FIND YOUR MODEL AND DOUBLE CHECK FOR IT IF YOU DONT ALREADY HAVE IT

emmc I think its in the arrow mark in the screenshot, but I am not really sure about that, I dont have any techical skills
[Galaxy Note 4 Q&A, Help & Troubleshooting] nicholes:
Hi guys,

I received my motherboard today (N910F) from aliexpress

I changed it in two tries (in frist one my front camera failed to start )

the video someone suggested here has one problem that replacing front camera was not as he showed in the video . He removed it from black plastic panel which was part of the camera . so if some one wants to change his motherboard take care while replacing the front camera it should comes with whole black plastic

Now come to the point

phone is heating when i use it which again looks bad news

i got android version 4.4.4

everything is working fine

the phone has sane chip

PHONE RESTARTED WITHIN 1 HRS WHILE IT WAS CHARGING !!!

I will not install wake lock right now and wait for it to test wheather it works without it or not

fingers crossed
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
Thanks for posting Nicholes!

When you first booted - Was the os already installed? If it was (and if you haven't already) Did you Factory Reset etc?

As for the video.... I think that was me who posted it?

After the phone has been running for a while without any reboots etc - If it were mine - I'd Odin to the latest Stock Firmware and then I'd Flash TWRP img.tar and SuperSU v2.82... But like I said - If it were mine ?

Sent from my SM-G955W ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] nicholes:
I was Talking about this video and this and front camera

OS was installed already when first booted

No factory reset done by me

Phone is still i am not using it right now and will remain same for whole night ( as night has fallen here )

Only one reboot while it was charging but since then i stopped it charging at 32% battery and it has cool down

I will think what to do with it in the morning :D

Thanks .
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
Yeah I didn't post that video... Have a good night - But I'd definitely Factory Reset - Advanced in TWRP 3.1.1-0 - Manually Wipe System - Data and Caches - Or if you don't want to install TWRP - You can do the same with the Stock Recovery - Even if your phone wasn't heating up while charging - I'd still Factory Reset etc - No way to know what kind of crap may be on the Motherboard ?

Sent from my SM-G955W ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] nicholes:
Update..

my phone was sitting ideal for last 24Hrs i come to my phone now tested a few things and found that spen is not working and also infrared is not working

should i reconnect the motherboard if there is any hope to make them work again??

please help
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
Hey Nicoles - A couple of ideas - Get a Sensor app or something like Samsung Device Info just to check if the Sensors are "seen" - And have you performed a Factory Reset - Wipe Caches with the Stock Recovery yet?

As I posted previously - I'd also Flash the latest Stock Firmware from sammobile.com with Odin 3.12.3 (or later) - You won't trip Knox (not that it really matters) but at least you'll know that your phone is running the complete & latest Firmware ?

Sent from my SM-G955W ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] nicholes:
Thanks for the reply

I installed app "phone tester " to check and IR is not available in that app

also i tested it by dialing *#0*# i cannot see ir LED blinking

also done wipe caches and done factory reset but no help

Looks like i have got china motherboard that does not support spen and infrared is not built in

take a look at the recovery it looks not from samsung :confused:

only thing remains is download the latest firmware and install it using Odin.

EDIT: looks like attachments not uploaded
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
Yeah maybe you can try to post the screen shot again - it would have to be a new post probably..

The Stock Recovery looks kinda like the old CWM Recovery if you remember what it looked like...

Sent from my SM-G955W ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] nicholes:
Uploaded in the previous post
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
[MENTION=4532755]nicholes[/MENTION] Yup that's the proper stock recovery ?

Sent from my SM-G955W ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] nicholes:
so i have got original note 4 motherboard that means??

if yes then what can cause spen not working and infrared as well?
[Galaxy Note 4 Q&A, Help & Troubleshooting] Saki01:
Probably one of flat cables on the back is not properly connected. I think on the right side. You can try to put plastic foil under conector. It has to be long enough to pull it out after.

Послато са GT-I9505 уз помоћ Тапатока
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
Well that looks like the proper stock recovery - So yes I believe that it's an original Note 4 motherboard - But it doesn't necessarily mean it's the correct motherboard for your version?

If you Download the Stock Firmware from sammobile.com and you Flash it with Odin - If it fails - That would suggest that the motherboard is for a different variant of the Note 4....

But if Odin Flashes the Stock Firmware successfully then this would mean that the motherboard is correct for your device and maybe the Spen will be working properly... Regardless I would definitely Flash the latest Firmware ?

Sent from my SM-G955W ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] hahn.lelo:
Had the same problem doing it the first time :laugh: it's because the connector of the s-pen (backside of the logic board ) is not connected properly ... I put a small piece of carton under the plug so it was pushed up a bit and voila everything thing worked and is still working ... since 3 months I think!
[Galaxy Note 4 Q&A, Help & Troubleshooting] moeburn:
So my Canadian Note 4 suddenly developed this issue - semi-freezing (won't respond to any input, but status bar still updates, and Cool Tool shows 100% CPU usage). And the partial_wakelock thing does fix it. Which makes absolutely no sense at all - if this issue is caused by the internal storage failing, it makes no sense why preventing the CPU from sleeping would fix that.

But whatever, are there any other confirmed fixes? Does using the PIT file to repartition actually partition around the bad sectors or something?
[Galaxy Note 4 Q&A, Help & Troubleshooting] nicholes:
Thanks man

I got an offer here in india to exchange it by xiomi mi max 2 (i hv to pay around 85$ more for it) and i have ordered it . So,

if they take my note 4 i would say goodbaye to note 4 or better to say goodbye to samsung. And if they dont, i will reopen it and try your trick

Thanks again.

---------- Post added at 10:28 PM ---------- Previous post was at 10:19 PM ----------

what i think is that there is some bug by which cpu goes to deep sleep and system tries to make it awake again and again and phone gets very hot that cause damaging to the phone.(this is what is my personal opinion on note 4 ) i am not any hardware expert so i may be wrong.

IMO that is samsung who did that **** and once you got this problem your phone is a patient and he is on the ventilator (waklock/cpuawake apps)

and as yet I dont know if anyone here has completely got rid of it.
[Galaxy Note 4 Q&A, Help & Troubleshooting] GamerBoy85:
If you got note 4 as a spare fone then you can try emmc reballing. Take your phone to the repairer and ask him to reball emmc ... it's a hardware issue and it can't be solved by repartitioning or anything else. Freezing and restarting occur due to loose connection of emmc to the PCB. Samsung tried new way, they put ram and memory together in a single chip and fixed it on a cpu so that cpu can access them much faster but the heat of cpu melt the connections of emmc. I just got all this info from other xda forums. So, the only solution is MB replacement and the other which is not a 100% solution is emmc reballing OR emmc replacement.
[Galaxy Note 4 Q&A, Help & Troubleshooting] nicholes:
Hi guys.

My replacement did not accepted toady for a new phone (xioimi max 2 ) because IMEI was not matched as it was mentioned on the back side of the phone because i replaced the motherboard. From here i would use phone now. please suggest me should i update my phone latest version (6.0.1) because i have heard that after the update so many people found their phone is freezing and heating etc.
[Galaxy Note 4 Q&A, Help & Troubleshooting] shaggyskunk:
I think that I've already suggested what I would do if it were my phone - I'd definitely update to the latest stock firmware and almost certainly Flash TWRP & SuperSU at the minimum - I am quite certain that the emmc Failure is not related to Flashing the device - Anyway that's my 2 cents ?

Sent from my SM-G955W ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] IainBa1:
Possible boot problem fix

Hi all, I've discovered that by using "free space defragmentation" that I am able to boot normally where before it was difficult to get it to boot, just use root method and select internal storage then immedietly shut down the phone then it should boot as normal, works every time for me, found that I have to run the app every time before shutdown though, app is available on play store, hope this helps you guys out
[Galaxy Note 4 Q&A, Help & Troubleshooting] Nytro87:
Here is the reason for reboots:

I just found this thread because someone linked it from the alexndr Rom. I had these random freezes a very loooong time ago. 4 5 times a day. This was mid 2016 or so. I figured out what it was.... the Liveleak app or basicly the function of it. Any website that triggers the Samsung build in video player or general video engine.

So how I do avoid this? Never ever using websites like liveleak again which uses the video player from Android. Youtube app for example works. As well HTML 5 players on websites is not a problem. It gets a problem as soon as a video link is opened in the video player.

Whatsapp is also not a problem. Since videos are offline and already stored on your device. As soon as a online stream video is opened in the video player you will run in that problem.

So what you have to do. Check apps which triggers the video player and dont bring their own one like youtube.

And of course videos which are stored on your device are also not a problem.

Greets

Nytro