yashsingh1/xdaforums huggingface dataset:
[Galaxy Note 4 General] fidagill:
Yup this is what I did and bought a new motherboard from Ebay. I went with a slightly higher price $90 because the seller has put it as new but it was also old and not new. Anyhow, after replacing the phone with a new motherboard, I had to format, repartitioned the phone for at least 30 times :D doing crazy things but not even an ouch from the phone. So, I would highly recommend to stop wasting precious time and just buy a used motherboard for $65. Replace it yourself and in just $65 you'll have a new phone. Or if you can find the chip that needs to be soldered back please let me know, then at least I can also try to fix the old motherboard :) to sell it on ebay :p
[Galaxy Note 4 General] aaron74:
Just as [MENTION=3150619]fidagill[/MENTION] mentions. If you decide to replace mobo. And don't have to return yours and your doing it yourself. Why not experiment and try heat gun it, if you use a thermometer and heat it just above the point of the solder melt point. Cover all components around it with a couple layers of aluminum foil. Let it cool off slow and natural for the joints to connect, don't push on the chip while it's hot. I studied electronic engineering and I'm not stating this is a fix but I'm saying it's worth a shot.

But I'm not asking you to even try this, only if your gonna replace the board anyhow! I just want to double state, if your gonna replace board, only then! If you feel up to it. It might let us know if we're on to something. Cause it's either that or the chips wear out after so many flashes.

I state again, no pressure from me. Just stating! Good luck!

If you Google this "hp dv6000 heat gun fix" and look at a few videos, you'll see what I've done to fix my laptop. Yes it did work and yes it would break again because of their heat issue. But is get another 6mo to a year from each time i did it. I even did the oven fix. I wouldn't suggest it on this though. Heat gun can concentrate the heat to a certain area but may take longer.
[Galaxy Note 4 General] rob_z11:
Can you please send a link of seller on ebay? How difficult is to replace motherboard? Did you come with camera or you replaced from your old one?
[Galaxy Note 4 General] fidagill:
I had bought from this buyer.

http://www.ebay.com/itm/UNLOCKED-Or...0V-P-A-T-Main-Motherboard-32GB-/282400560434?

But I wouldn't suggest paying $125 for a used motherboard although the seller claims it is new. However, I would say that the seller was excellent and he tried everything to help me once I got the old and blacklisted :) motherboard. He is a caring seller that is for sure. It's a long story, but I would highly recommend using AliExpress to find the MOB of your phone's model. Mine is TMobile N910-T version.

You have to swap Rear Camera, Front Camera and proximity sensor from your current MOBO to the new one. Now, is it tricky to replace MOBO in note 4, I would say there are only two steps that you have to do carefully. Other than that it is pretty straight forward and you can easily do that. I followed this video

https://www.youtube.com/watch?v=vnUnrSybpX8

Now to the tricky steps. (1) After removing the 16 screws, you have to separate phone body from the screen. As this would be the first time you'll be removing the body, so the glue that is holding the body with the whole logic board including screen, will be more sticky. So, don't hurry into separating both. Use some good prying tool and first complete the circle from the front of the phone. This would not separate the body, but it will make it loose from the front side. Now, you'll have to start prying on the back side from the inner side of the battery cage. Try to separate the body from there. Then afterward try to separate both screen and the phone body, slowly.

(2) There will be two connectors that you'll have to connect from the back of the screen to the motherboard (watch the video, and you'll know what I am talking about). The connector just behind the heart rate sensor can easily be aligned, and you'll hear the click sound once you press. The other connector is behind the SD Card slot, and this is the tricky one because it can slide left-right and it can move downward. So, even if it may be aligned, but due to the downward movement, it may not click. So, what I did, I put a 0.5 mm thermal pad piece behind that connector to slightly lift it and made sure it doesn't move left right. You can use any piece of paper to do that. One tip, make sure you don't lift it a lot as it may result in the poor connection of the CPU with its thermal pad. For the rest, you can follow the video. The connector behind the Heart Rate Sensor is used for the touch screen and display function. The connector behind the SD Card is for SPen functionality. So now you know how to double check if these connectors are connected or not :D. Another tip; After connecting the MOBO and its connectors, insert the battery and turn on the phone without putting the SCREEN + MOB in the phone body to make sure, the phone is completely functional.

By the way, you don't need to separate the screen from its adhesive for replacing the MOBO. Keep that in mind and don't follow the video in its entirety :p

Hope that will help.
[Galaxy Note 4 General] rob_z11:
Thanks for the detailed email. I have watched few videos about it, and looks not that complicated except prying the front which is going to test my patience.

I have replaced LCD of Evo 4g back in the days, and it was an experience..

Mine is dying, but not there yet. I do get mmc error on certain ROM, and stick it is difficult to reproduce at times.

Will buy motherboard just in case since it takes 7 to 15 daya
[Galaxy Note 4 General] fidagill:
Do you get emmc_error only on certain Roms? Then why don't you use the ROM without this error. Because problem with many of us was much more severe, (1) the phone would not turn on after deep sleep, (2) it would freeze for no reason for many seconds before respoding, (3) If we have to restart then it would not turn on except removing battery for at least few seconds, and (4) Overall it runs very slow. The underlying problem was emmc. So, if you are not experiencing any of these errors then just do one thing to ensure your phone's emmc error is because of Hardware or software. For this just download AndroBench (Storage benchmark) software and see if you get aroudn 200 MB sequential read and around 150 MB sequential write. And if you do then just follow one of these instructions or both to remove emmc error.

1) https://xdaforums.com/note-4-tmobile/general/ddi-mmcread-failed-boot-error-fix-t3434335

I think the chances of success would be more following these instructions

2) https://xdaforums.com/showpost.php?p=71133586&postcount=21
[Galaxy Note 4 General] rob_z11:
Well I don't have those severe symptoms. If I run stock or emotion ROM, it hardly crashes or black screen of death. I can turn off, and do things without pulling battery. Some ROM, it is more difficult to restart and you have to pull the battery and wait for few seconds or you get mmc error.

My read test is about 42 MB/sec and write is about 38 MB/sec.

Any comments on these numbers? Phone doesn't feel any sluggish or slow at all..

My phone has bad mmc. Ran similar test on friend's let Max 2, and got 330 MB/sec read and about 180 MB/sec write.

Sux. May get motherboard ordered at least...
[Galaxy Note 4 General] fidagill:
Although, you are not observing any severe symptoms but based on your results I can say that it is a most likely hardware issue. Because I was observing the same speed. Another test you can do now is called the Freezer test :D. Take out the battery, put back the back cover, wrap your phone properly in a shopping bag and then put it in a freezer for an hour. Take out, turn it on and run the same AndroBench. You'll observe around 200 MB sequential read and around 160 sequential writes. This will further substantiate the possibility of hardware fault. However, as you are not observing any of the symptoms, therefore, you shouldn't worry about. If you want to try any of the above-mentioned solutions then try the first one because it doesn't involve repartitioning using PIT file. Using PIT requires more in-depth knowledge about flashing phones and it comes with a risk of bricking your phone.
[Galaxy Note 4 General] cyinder:
i need eMMC fiels for sm-n190w8 canadian bell

i dt no were to get one all i need ty :D:p:o:(
[Galaxy Note 4 General] buzz71:
hello to all i have "repartion failde"..who can help me?

---------- Post added at 10:52 AM ---------- Previous post was at 10:51 AM ----------

hello to all the phone won't go in recovery mode and it's impossible to download a firmware....
[Galaxy Note 4 General] cyinder:
fixed my note 4 sm-n910w8

HI that file that comes up error eMMC read not your memory or pit file it's the firmware you down load and how you down load it and the copy of odin if anyone needs help on there note 4 free free msg me mine runes like a champ better then new lol..........keep in mind uninstall kies when flashing or working with odin even tho u don't have it up still conflics somehow :o:o:o:D:D:D:D:D:D:o:o:o:)
[Galaxy Note 4 General] buzz71:
so..please tell me step by step what i must do to resolve...it!
[Galaxy Note 4 General] SteveRiley:
EMMC errors indicate hardware failure. It'll progressively worsen over time. Send your phone to Samsung for repair -- in the US they're charging $70 for a replacement main board and they'll fix other issues, too.
[Galaxy Note 4 General] puhiniho:
Whom and where do you send it to samsung to repair? I wouldn't mind paying $70 to repair my phone. Thanks!
[Galaxy Note 4 General] SteveRiley:
Call 1-800-SAMSUNG. Describe your symptoms and mention you're experiencing the same issues as many others have reported. When they quoted me $70 to repair, I pushed back a bit, explaining that I shouldn't have to pay for fixing damage caused by faulty design even after the warranty long expired. They gave me 20 percent off, so I paid only $56. Took about a week.

I'm very happy to have what feels like a new phone. Yes, our Note 4s are ancient these days, but they're still beasts. Nothing on the market interests me. Phones have become borrrrrring........
[Galaxy Note 4 General] samep:
If Samsung can repair eMMC with new parts on a steady turn around, this option appears to be better than a method I was suggesting.

Replacing main board seems only possible with used certified boards. EMMC wears with use, so how much use have these used certified boards already experienced before second user gets replacement board?

It's possible a Samsung certified board or new board -whichever applies- has new eMMC chip on board. Should yield greater satisfaction and longer life.

It's possible all the original main boards were built with suspect parts or had workmanship defects. So maybe replacement boards and or parts are more reliable?

If only we knew what Samsung knows about the subject of failing eMMC on Note 4 and S5.

[MENTION=270939]SteveRiley[/MENTION] thanks for sharing. Could you tell us how long your repair was warranted by Samsung?
[Galaxy Note 4 General] lisbon2004:
there was a utility that was able to read the EMMC chip manufacturer, version and other things.

have you checked whether you got the same old chip, or an upgraded one?

I guess it was the eMMC Brickbug Check, although i remember there was also another one that had even more information...
[Galaxy Note 4 General] samep:
For reference here's my results from the app you linked.

My Note 4 was picked up on launch day some 32 months ago. Pre-ordered from Best Buy back when Sprint and Samsung still allowed unlocked bootloader purchase on subsidy. Paid just over $100 for the phone on contact. Good times; been a good run.

Thanks for that.
[Galaxy Note 4 General] dorian2kx:
Hello guys i have the exynos version of note 4, should I be worried about this emmc fail bug
[Galaxy Note 4 General] SteveRiley:
According to the Phone Info app, my main board shows a manufacturing date of 2017-03-03. Difficult to know for certain, but I suspect it's a new board, not a refurb.

Could be, and perhaps simply replacing the EMMC also changes the manufacturing date shown in apps that query such info. I can say unequivocally that the phone feels brand new.

There's certainly a mystery clouding these phones. EMMC failures suddenly spiked when Marshmallow upgrades became available, leading many of us to think some bum firmware was the culprit. But then reports emerged of failures on phones still running Kit Kat and Lollipop. The one constant is that the bulk of failures began occurring after 15 to 18 months of device age, so perhaps the issue is purely hardware age and thermal expansion/contraction.

90 days.
[Galaxy Note 4 General] jhan0720:
Can you use this method in note 4 n910p with mm 6.0.1?
[Galaxy Note 4 General] puhiniho:
I called Samsung and am planning to send my phone in so they can replace my motherboard. They wouldn't give me the discount, as it's difficult negotiating with these non-English speaking reps. Anyway, I had a question, was your phone rooted and did it matter? I really can't do anything as my phone no longer turns on but wanted to check with you guys.

I'll give everyone an update once they get my phone.
[Galaxy Note 4 General] SteveRiley:
Yes and no. Yes, my phone was rooted, which means the Knox counter was tripped (showed 0x01). No, they didn't care. I did flash the latest stock unrooted ROM onto my phone before I sent it to them. Dunno if that made a real difference, but I figured it couldn't hurt to present a phone as close as possible to their expectations.
[Galaxy Note 4 General] notachamp:
I've also thought that my phone is dead but i just remove the battery and i'm waiting about 30 minutes or more and it can boot again it's all fast and great, only with wake lock app in partial mode. I'm using the Resurrection Remix Nougat Rom with emotion Kernel (if your samsung stock rom works well keep it, it has better gallery and camera) so my phone doesn't get to hot with that rom and it's still fast enough. I think my hardware it's broken but i'm still able to use the phone with that remove battery and wake lock app tricks.
[Galaxy Note 4 General] takis:
Guys i am getting worried now, bought a used note 4 and it's the Snapdragon... Phone was built in 28/2/2015... Shall i worry?
[Galaxy Note 4 General] samep:
Now that you purchased it, enjoy it. Not all have failed or showed signs of failure. Exynos versions also used eMMC so I would think they are equally prone to eMMC failure unless Qualcomm contributed to the issue in some way? Maybe there more snapdragon models manufactured is the reason these have failed more?

My advice is check your warranty. Maybe you have 90 days? And I'd suggest watch and limit the temps. Things like updates or flashing custom ROMs or wiping dalvik cache and booting, initially, will cause temp increase. I suggest using forced air from a fan to limit that increase; a small laptop cooling fan would do. I have an air purifier nearby that I use; cooling either side works, I chill the screen side, face down on air vent, for these long boots. Slightly raised with the cover and my case removed, I can monitor progress from chair with the screen reflection on surface of air purifier. It's good for the hardware, screen and battery.

You may also want to avoid fast charging with screen on. I use a regular charging block to avoid fast charging altogether. I've noticed even with fast charging disabled a reboot while charging can enable fast charging but a notification will be displayed on pull down notifications. This is why I defeat fast charging with regular charging block. The extra heat from fast charging is also a concern. Batteries may post longer but only expect them to last a year.

And always replace battery with fresh new one if its health stats fall or it shuts down before 0%. I'm suspicious about bad batteries contributing to eMMC failure. Properly discard and replace bad batteries. I think Anker is a good choice because they're popular and warranty longer than most other manufacturers. They may know better when shelf storing batteries to try keep at 50% capacity for better life for user? I'd appreciate feedback on that. My recent trusted battery source, not Anker, sent me a battery at 16% capacity. Obviously wasn't stored or maintained for max user life. Buying new batteries for older phone makes that a necessity. We need capable battery sources so check the capacity for new batteries received by turning phone off and plugging in USB charger to note the shipped or stored capacity. Should be close to 50%.
[Galaxy Note 4 General] takis:
This definitely doesn't make me feel nice! I was super hyped about buying this phone today and i was going to get an extra pen, battery and a second glass screen protector but this stuff is scary!

I wish i could tell if my device is in the affected list...
[Galaxy Note 4 General] samep:
Certainly wasn't my intention to make your purchase scary.

Typical to research and find potential issues you may not have considered before purchase. Then get see all the negativity and feel you could be a victim. How many have failed; I know not? Forums tend to focus on complaints more than users posting that they don't have the issue.

I'm not aware of any list of bad motherboards or eMMC or any lot that was prone to workmanship.

But I was trying to suggest care may prolong the life of eMMC because it is prone to wear. The suggestion that some live longer could possibly be a reason some live longer but we don't have all the data to conclude what Samsung may know.

You could verify your warranty, make sure your battery is in good health. Buy backup or more in advance; they're cheap peace of mind. You could also run the test with the app recently posted and compare with my screenshot results. Considering there are those that don't have the issue that have used the phone since launch and sharing their care, testing and following the advice may give you peace of mind.

I don't see others for comparison but I recently shared my latest benchmarks with and without USB charging. The Note 4 has increased benchmarks with each OS update, it seems. So I wouldn't think my eMMC has degraded but my specs were posted for comparison. Based on bench and lag minimized, I enjoy my Note 4 more today than in the past. If you have a good Note 4, I wouldn't want to worry you. If yours is failing within warranty, you shouldn't have to pay cost to fix it but if it does fail at some point out of warranty, it's not costly to repair. May be inconvenient but not expensive.

Maybe your Note has already had this failure and been refurbished? Phone Info for Samsung on Google Play will tell you if your Note is genuine. I think it also can tell if it's refurbished on that same report?

Anyway, here's my recent bench with my scribbled details on them.
[Galaxy Note 4 General] takis:
My phone is original according to phone info, it hasn't been refurbished... Is there any clue that this happens only on the batches of the first two months for example?

One of the main reasons i got the phone is to start playing a bit with custom ROMs and stuff, my phone was made at the end of February of 2015, hence there is no warranty...

Even if I saw about this, there are so many people out there saying the note 4 is the best device ever released
[Galaxy Note 4 General] takis:
One question, from what I understood, emmc is supposed to decade with time?

Never heard of other phones having this... So you think that my unit could be safe and not show the problem at all?

How much does the repair cost?

By the way do you believe that i shouldn't flash the stock marshmallow through Odin again?
[Galaxy Note 4 General] samep:
One poster has shared the total experience with Samsung repair. He said it took about a week and the original quote was $70 for U.S. repair. He got a discount for whatever push back he gave; maybe he referred to the discussions about eMMC failure in the forums, IDK?

What I was saying, if you've ran the eMMC test and passed, no reason to suspect the failure would happen if you take care.

Full stock tar flashing avoidance is subjective but I've given my reasons for wanting to avoid it when not necessary. Weigh that with your own conscience and guidance; I don't wish to be held in conflict with developers. Along with that disclaimer, I also believe there is some merit to theories that multiple wipes and redundant formatting could ultimately bring the eMMC to early death. It's mostly based on theory and opinions of respected developers but smaller on fact. Most agree that eMMC has a shorter life, runs hotter and slower than UFS memory. That hotter and slower dynamics basically equates to inefficiency and heat results; ultimately this could shorten its usability and effectiveness compared to newer tech in use today.

But the advice given I believe could limit the risk rooted users impose on their phones. With that regard, it's likely that un-rooted phones are equally at risk to fail if these use methods are practiced. But if all theories do apply correctly, it's likelier an un-rooted phone having multiple OTA automatic updates is going to fail before the user that avoids frequent tar updates in Odin and avoids the heat on those boots I mentioned and keeps battery healthy and changed when needed.

Staying on the same update and flashing less frequently in recovery could increase the eMMC life if all that held true. Ultimately, you decide yourself. And you may not know the previous care given to your used phone but likely a failure could be repaired without great expense.

The biggest question to answer now is how the phone performs? You may have to debloat and customize to get improved benchmarks but those are subjective too. Limiting lag is your key goal; touchwiz can be a challenge in that regard. CM may not be as bug free, reliable or featured as a custom touchwiz ROM.

Battery wise, KitKat and Lollipop Ultimate Note 5 ROMs offered the best battery life for me. Got some crazy life out of those ROMs but Google seems to always want more of that battery reserve so that can be subjective when comparing Android OS versions.

Performance and minimizing lag may be best found in UN7 with its Grace UX UI, IMO. UN7 (Ultimate Note 7) may be a little less skinned but still offers benefit of custom themes that stock Note 4 never got. My posted stats were with debloated UN7 with Beastmode kernel and Xposed framework and several Xposed modules along for the ride. I feel that's very good stats for a highly customized ROM.

I debloat by freezing unneeded applications only...
[Galaxy Note 4 General] takis:
Pfff...

So if the emmc bug check app says "sane chip" I will probably be all right?