yashsingh1/xdaforums huggingface dataset:
[Galaxy Note 4 Q&A, Help & Troubleshooting] kane2021:
Buy a new phone asap

I went through a few of them in a short period. It's on the motherboard. You're just chasing your tail with software and taking days off it's life in the process. Wakelock is a good temporary solution. Spend your time figuring out how your going to get another phone. Not software fixes for a hardware problem.

Trust me. This is the beginning of the end. And the end is coming fast. Use wakelock to buy some time. Get a new phone. Personally I strongly suggest stay away from Samsung. This happens too soon way too often.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Dwillian:
Thanks for the update. That is a good deal.

The Samsung repair center says they will fix my phone for $70. I should have it back in about a week. If it is truly fixed then I will hang onto my Note 4 for awhile longer. If not it will be time for a new phone.

Update 4/21/2017: I received my repaired phone today and I am ecstatic. Samsung repaired quite a few parts including the motherboard, home key assembly, rear speaker assembly, LCD assembly, the mid-frame, and the exterior frame that wraps around the phone (mine was getting chipped where the USB cable plugs in). Everything works great. The phone no longer freezes, overheats, or randomly reboots. My phone looks and acts like a brand new phone. This was the best $70 I've ever spent. I think I can probably get at least another two years out of my Note 4. I would highly recommend that anyone having the problems being discussed in this thread contact Samsung Customer Service (at 1-800-SAMSUNG) ASAP.
[Galaxy Note 4 Q&A, Help & Troubleshooting] The_Mentiad:
So I just last week developed this problem. Same symptoms to a tee. Wake lock seems to help. Rooted on Dr Ketan Rom. Love the Note 4 though (and I only got it about six months ago :'( )

Granting permissions to Touchwiz didn't help. Deleting Facebook didn't help anything except my psychological health.

Has anyone had any luck with other solutions such as disabling smart manager that were listed on this thread?

(Btw, I cant find Smart Manager, but I have Smartcard Manager, Smartcard Service, SmartFace Service, Smart Switch Agent, Smart Select, Smart Capture... are any of these the same/similar?)
[Galaxy Note 4 Q&A, Help & Troubleshooting] Saiz_82:
It seem the same problem in my note4 910c

I'd wipe it, and load android 5.1 , android 6 , and android 7. Unofficial , i changed the batery too, i also download some softwear to awake display , yet no solution appear ,

Please give me some solution..

Thank you
[Galaxy Note 4 Q&A, Help & Troubleshooting] peterson65:
Thanks for the update. That is a good deal.

The Samsung repair center says they will fix my phone for $70. I should have it back in about a week. If it is truly fixed then I will hang onto my Note 4 for awhile longer. If not it will be time for a new phone.

Update 4/21/2017: I received my repaired phone today and I am ecstatic. Samsung repaired quite a few parts including the motherboard, home key assembly, rear speaker assembly, LCD assembly, the mid-frame, and the exterior frame that wraps around the phone (mine was getting chipped where the USB cable plugs in). Everything works great. The phone no longer freezes, overheats, or randomly reboots. My phone looks and acts like a brand new phone. This was the best $70 I've ever spent. I think I can probably get at least another two years out of my Note 4. I would highly recommend that anyone having the problems being discussed in this thread contact Samsung Customer Service (at 1-800-SAMSUNG) ASAP.

dont know how you got so lucky, sent mine in and they said 70 bucks, so i thought great sent it and just now they contacted me and said the lcd has ghosting and wont fix anything unless i pay for the lcd? the lcd was perfect so now its $185 and i cant get the woman to tell me what else they are going to do to repair the original problem. she just kept reading a script back to me . b/s they are liars i said its a motherboard thing and she kept talking about the lcd. so i had to pay so lets see if they even fixed the locks and reboots
[Galaxy Note 4 Q&A, Help & Troubleshooting] Misia:
iv been told by samsung my fone is out of warrenty and the can book me in for a repair which is chargable £195.00 my old n7000 is still running solid
[Galaxy Note 4 Q&A, Help & Troubleshooting] Dataking:
Hi, i had the same issue on my Note 4 SM-N910F. I tried to solve these problems with different roms (stock, custom, not rooted/rooted) and it made me crazy that nothing could do the trick. It seems to happen with thousands of users! Well my phone is now up and running again, no freezings, no unresponsive screens, slowness, white screens when opening apps, randomom reboots etc. The fix is simple: Go to the Play Store and search for the below app:

Wake Lock - CPU Awake

https://play.google.com/store/apps/...cpu&pcampaignid=APPU_1_RQsaWdXZG4nGwQLe9aPwCw

Download and install. Open the app and enable checkboxes: Unlimited Time, Phone Start, Mobile Data, Wifi. Select lamp status to off. In the right lower corner select: Activate. You can now start using your Note 4 as a new one!!! Hope this will help a lot op people :)

By the way: enabeling this app will not remain in any battery drainings.

Cheers, Mark
[Galaxy Note 4 Q&A, Help & Troubleshooting] debernardis:
I found a thread on Reddit where some people claim to have solved the emmc_fail problem by putting their phone in the oven at 100°C for 5 minutes, face down on cardboard, open and with no battery.

They say it's the same thing that people used to do for misbehaving graphic cards, and it's said to work on failing solderings.

Look here: https://www.reddit.com/r/galaxynote4/comments/6bxj7k/have_you_tried_cooking_it_mmc_read_fail

EDIT: first message deleted, dunno if by moderator or OP, though people in comments still say this worked. I guess that once your phone doesn't turn on any more, why not try?

EDIT2: 2nd thread on Reddit https://www.reddit.com/r/galaxynote4/comments/6c70pp/mmc_read_fail_fix
[Galaxy Note 4 Q&A, Help & Troubleshooting] waveyknowsbest:
Samsung Note 4 security crash

Me too. I just had to reply so u guys don't think u are alone in this. The whole internet is buzzing with Marshmallow crashes across multiple devices. Mine started crashing about a week ago after the new security/battery patch, now my phone crashes bricks itself and also screen overlay issues.

Anybody out there have any solutions beyond cache partitions, sim removal or factory resets all of them I have tried already.
[Galaxy Note 4 Q&A, Help & Troubleshooting] ProximusPRO:
(SOLVED) Note 4 keeps freezing and restarting

It used to happen to me a lot. I was gonna throw that useless stupid phone out of the window, then I found this video and it stopped freezing or restarting at all: https://www.youtube.com/watch?v=K7j5hQVT4_s . Hope this helps everyone.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sp0oner:
Mines being doing all this for the last week to 10 days and been driving me nuts. Flashing with odin hasn't made any difference. It al started after I woke up one morning to find my phone had rebooted on its own to recovery mode with it saying :

Could not do normal boot.

ddi : mmc_read failed

etc

etc

It's done the same thing numerous times since with constant freezes, reboots and not booting at all until the battery is removed for 5 minutes. Then it can run fine or a couple of hours and then it starts all over again.

Is this the set of symptoms that points to the new motherboard being required from Samsung repair centre?
[Galaxy Note 4 Q&A, Help & Troubleshooting] BluePhnx:
Yes it is!

But you can install wakelock app from play store and set it to partial wake lock (5 option) this should stop the freezes.

I have the same problem, been using that app for half a year to keep my phone running normal as it can be. The app keeps the cpu active(running) all the time so it does effect battery but not by much. At least the phone will run normal with no freezes or restarts just don't turn off phone or you might have trouble turning it on again.

It is a temp fix, eventually you'll need to replace the motherboard!
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sp0oner:
Thanks, yes after reading many pages on the net tonight about this problem i've installed WakelockPowerManagement on setting 4 with autostart enabled. Since installing it the phone seems really snappy so what I don't get with that is how a power management app is helping with a hardware issue such as the motherboard failing?!

Some believe it's related to the last firmware patch sent out which is when mine also started having these issues. So either there is an issue in the firmware or it's caused a physical malfunction. I've had my Note 4 since launch day and it's been faultless until all this started recently and it's strange so many others have had it in the last month or so. Either that or the motherboard is failing on many devices all at the same age. But again how would software such as wakelock help reduce the symptoms of hardware failure?
[Galaxy Note 4 Q&A, Help & Troubleshooting] BluePhnx:
I agree with you on that. I was wondering the same thing. How can an app stop the phone from freezing?

I think it has something to do with the cpu not able to wake up after it entering deep sleep because when cpu is active all the time phone is running smoothly.

But doesn't explain why the phone won't start up normally and just goes into download mode with that emmc error message. Maybe there's two issues instead of one?

I really don't think it's the memory. If it is you'll be getting corrupted files and lots of apps force closing but I'm not getting any of that. Has to be something else.

Good luck with your note 4!
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
It works just read the posts on XDA. Stops it deep sleeping when you own a crappy samsung phone....

Anyone got a price on buying a new motherboard for these note4.
[Galaxy Note 4 Q&A, Help & Troubleshooting] callumbr1:
Yes exactly, mine started doing that and after about 10 days it went off and won't come back on. I've tried a new battery to make sure but it just won't charge or power on. It's dead :(
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
put it in fridge for 15 mins or freezer for 5 mins, it fixes mine when it wont boot.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sp0oner:
Well mine has a new lease of life with wakelock as it's gone back to being really snappy performance and so far today the battery seems to be going OK. DU battery saver is obviously a lot more active shutting stuff down as the 2 are basically conflicting but it's working properly for the first time since it started happening. I just hope a Note 8 is released by October and this solution sees me through until then.
[Galaxy Note 4 Q&A, Help & Troubleshooting] callumbr1:
Strange... I've heard of putting it in the oven without the battery for 10 mins at 100 degrees before but not the fridge
[Galaxy Note 4 Q&A, Help & Troubleshooting] ubitlopez:
it works quite well

i did this an hour ago and until now no lag and no unwanted reboots.:good: will keep testing.:fingers-crossed:

my note 4 Powers off OK, but if i choose "Restart" after samsung logo fades out it stays that way and i have to remove battery to Power On, again.
[Galaxy Note 4 Q&A, Help & Troubleshooting] vihitshah:
hello i have samsung galaxy note 4 version SM-N910P Whenever i turn on the phone it automatically boots into recovery mode and starts installing system update and then after 100 % it switches off and never turns on back. Please Suggest me some remedy. Thank you
[Galaxy Note 4 Q&A, Help & Troubleshooting] debernardis:
I do these full emmc repeated write/delete cycles every 2-3 months, when I feel it's lagging in everyday operations, and the effect on my phone's behavior is stunning.

I don't know if this also prevents or cures the emmc failure, but it cures lags and freezes for sure.

Is it at least conceivable that the emmc failure be a consequence of some kind of error in memory cells that gets reset by periodic full write/erase cycles?
[Galaxy Note 4 Q&A, Help & Troubleshooting] rockitman:
Progress maybe

Been following the thread for the last week and read every thread. I do have wakelock installed and running so am able to use my phone but I was getting the random reboots and having to pull the battery anyway. The problems I was facing like other is if the mobile was turned off it wouldn't boot up and a battery pull was needed.

Following the thread someone posted about the optimise battery usage and by disabling gallery and contacts worked for them strangely. I went through the list of things and ticked off others that might correlate to other problems that people thought might be to do with the issue so the list I have done is

Android system

Bootagent

External storage

Sim toolkit

Media storage

Service mode

Service mode ril

All of the com.qualcomm ones

Enterprise sim pin services

So things related to storage, system, boot, and sim.

Before I set these and wakelock was set, a restart by holding power and pressing restart would end up in me needing to pull the battery. After these were switched to of the phone restarted to my amazement.

I tried to do a software update release the other day thinking it might solve all the issues but the phone wouldn't boot into the update mode, that was before setting these things to off so I'm gonna try again soon now the phone will restart on its own again.
[Galaxy Note 4 Q&A, Help & Troubleshooting] SteveRiley:
Bought my Note 4 in early 2015. It started showing the same symptoms as so many others here in the middle of 2016. I was making do with the wakelock and freezer tricks, but loathed it all. After seeing reports here an on Reddit about success with repair, I called Samsung a couple weeks ago.

They quoted $70 to repair whatever problems they see. I tried to get them to do it for free (some Redditors received this) but best I could get was 20% off, so down to $56. I flashed back to clean stock and sent the phone to Samsung's repair facility in Plano, Texas. Earlier today I received an email indicating my phone is fixed. The message says:

PBA is phone board assembly -- so yay, new EMMC!

LCD is obvious. It's true that there were two half-inch-wide regions on my screen where the stylus wasn't registering. Glad to see Samsung repaired that even though I didn't ask about it.

I don't know what the other component is or what cosmetic part they replaced -- maybe something that's disposable when disassembling the phone?

To all of you having the read fail problems with your Note 4 -- send it to Samsung, get them to repair it. Whether you pay $56 or $70 or even $185, it's better than buying a new phone. They obviously do not care if Knox is tripped. TBH, Note 4 still kicks ass after all this time. I've been on a Nexus 6P while the phone was under repair and while it's an OKish device, I want my Note 4 back :)

When my phone is in my hands in a few days, I'll post an update. I''m curious if Knox is re-enabled.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Dwillian:
See my post earlier in this thread (post #304; https://xdaforums.com/showpost.php?p=71819804&postcount=304)

I do think you will be much better off if you call Samsung Support (1-800-SAMSUNG). You should be able to get your phone completely repaired for around $70 which is about the same price you will pay for a MB on AliExpress (and you will need to install it yourself which looks like a non-trivial job).
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
So Dwillian, red you post 304. You mentioed it would cost $130 for samsung to replace motherboard? What was the outcome of this, i did not see a response but could have missed it.

In the quote you say $70 for repair. Is this also from samsung? $50 difference in price.

But interested to know what samusung ended up charging you, and if it fixed youe phone.

No probs i found that you where lucky with samsung and you are in the US, I recob in australia the charge will be high.

Good to hear your phone is like new.

Ta
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sp0oner:
Has anyone in the UK got Samsung to repair their phone for this issue as I bet they won't do it as cheaply as our friends across the pond get it repaired for. My phone is still running perfectly since enabling wake lock so i'm not in any immediate hurry for a permanent fix.

Edit: to answer my own question and for other UK owners I decided to call the nearest Samsung repair shop an hour away from me and it's £165 to replace the motherboard! So about 3 times the cost of what the Samsung in the US charges.

Looks like i'll be relying on wake lock to keep my phone running until the Note 8 comes out.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Dwillian:
Sorry for the confusion. I should have also mentioned my follow-up post #310. I was originally quoted $130 for a MB replacement, but they actually only charged $70. Here's what my repair invoice said they did:

Original Problem:

OPERATION SYSTEM ISSUE - PLATFORM / SOFTWARE - OPERATING SYSTEM ISSUE

Problem found:

AUTO POWER OFF W/BATT/TEST CAB - KEYPAD / KEYPAD BACKLIGHT INOP - IF/CHARGING PORT - FWT

Solution:

REPLACED PBA - REPLACED COMPONENT - REPLACED LCD - REPLACED COSMETIC​

I'm told the PBA is the MB, not sure what the COMPONENT is that was replaced. REPLACED COSMETIC was the mid-frame surround (I had a lot of chipping around the micro USB port). These repairs absolutely fixed my phone. It is like a brand new phone now. I've been using it for about 1.5 months now and it is still working great.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sp0oner:
You are lucky I asked here in the UK if my lcd needed doing would it all be done under the one price and they said no every part was chargeable and with the lcd it would go up to £250 and be considered an uneconomical repair.
[Galaxy Note 4 Q&A, Help & Troubleshooting] whitend75:
A huge THANK YOU to iamfoesho for posting the information about Wake Lock. You just saved me hundreds of dollars and and lot of frustration. I installed the app, turned on Partial and my Galaxy Note 4 started behaving completely normal again. I have no random rebooting and the speed is like it was when it was new. You're brilliant!
[Galaxy Note 4 Q&A, Help & Troubleshooting] peterson65:
well my note 4 is perfect now, the marshmallow update messed it all up with crashes and reboots. $185.00 and it looks like samsung replaced most of it. funny it worked perfect on 5.1 and never rebooted till the update. not happy with samsung but cheaper than a new phone. this problem is happening to allmost everyone after the update. wtf! wish they would help with the repairs and acknowledge the problem
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
Yes agree, a lot of people had this freezing reboot issue after an update. So samsung should have addressed the problem, but look at there s7 battery problems, I d say sansung= cheap these days
[Galaxy Note 4 Q&A, Help & Troubleshooting] SteveRiley:
Here's mine, which UPS delivered yesterday. Only $56 to replace a substantial amount of the phone's guts. The manufacturing info obviously is derived from the PBA (motherboard) -- note the recent date and that Knox is untripped.

The phone had EQC1 firmware installed, which immediately updated itself to EQE2 (the latest for T-Mobile as of 2017-06-01). It feels like a brand new phone, which it mostly is. No lags or stutters and a deliciously long battery life.

I intend to remain on stock and unrooted for a while. I've disabled quite a lot of applications through the settings menu, but will avoid rooting and uninstalling stuff or using a package disabler. After reading through several posts here and on Reddit, I'm wondering if excessive modding has been the cause of at least some of the frustrations so many of us have had with Samsung devices generally.

https://www.reddit.com/r/GalaxyS7/comments/6awguj/this_is_what_package_disabler_lag_looks_like/
[Galaxy Note 4 Q&A, Help & Troubleshooting] drooperhaley:
Glad you got it fixed and it was very reasonable. I'm sure curious about why Samsung has some radically different prices for this service. If I knew mine would be like yours or even the $72 some have paid, I'd gladly send it in, but they will not commit to a price until they see it. It works pretty well with the Wakelock app, but shouldn't need it.

My phone is AT&T and not rooted (not possible as I understand it) and not modded, but still has the problem. It's on the latest update.

Good luck to all with this problem.
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
Yep pricing seems all over the place. I ran the kernal aiudtor app mentioned a few posts ago. I found the same only 2 out of the 4 cores where active.

Anyone know why there are only 2 cores of the 4 cores active?
[Galaxy Note 4 Q&A, Help & Troubleshooting] Dwillian:
When I sent my Verizon Note 4 into the Samsung repair center they assured me that they would send it back at no charge if I decided I didn't want to pay the repair price. So, except for time without the phone, you really don't have anything to lose by sending the phone in and let them diagnose the problem(s). In my case I ended only paying $70 and my phone was completely repaired to "like new" condition and works flawlessly now. I'm very optimistic that I will be able to keep using this phone for another 1-2 years now.
[Galaxy Note 4 Q&A, Help & Troubleshooting] mahrukhsa2:
ohhhhhh guys whats all thiss ??? im going buy a note 4 used for very less almost 170$.. in very good n clean condition.. how can i avoid this issue ??
[Galaxy Note 4 Q&A, Help & Troubleshooting] Nyssa1104:
Well I had the same problem as everyone, random reboots, not able to switch back on, reboot in download mode, freeze when it was working..

I installed Wakelock that worked for about a week, I then installed Wake Lock along side Wakelock and that worked but I dare not let the battery run down made sure battery was at least 35% min. All this was on clean Android 6 installs.. My main concern was the dreaded ddi : mmc_read fail would finally kill my Note 4 which it did, so I took it to Samsung Service Centre in London today (Wandsworth) Southside Shopping Mall. Told the staff my problem and even showed them photo's of the ddi : mmc_read fail unable to boot and links on the net ie xda forum and some other sites.

They agreed it was a motherboard problem and said it needed a new motherboard.

They did the repair all within 90 minutes all FREE of charge yes Free with the latest firmware which came out 5 days ago.. My device was out of warranty but yet the still did the work for free.

The only other thing they said before the work was carried out if there's signs of unauthorized repairs or water damage there be a charge of £25 to put the phone back without repairs that's if I refused to pay the outright cost which was kinds high..

So it's worth going into a Samsung Service Centre with some info on the problem while under warranty its free of charge for a new motherboard..

So I'm one happy Galaxy Note 4 user once again..
[Galaxy Note 4 Q&A, Help & Troubleshooting] pcp20us:
RRRR dont buy it
[Galaxy Note 4 Q&A, Help & Troubleshooting] Kuter_tm:
Hello ! My note is allmost dead! I have F version. My internal memory read/write test show me R-35MB/s W-32mb/s ( my friend working note have 215/124 mb/s) So my is much slower.... I have question.. Im done with snapdragon (F) can i buy new motherboard with Exynos? (C) looks that same , but rest will be work? Camera, sensors etc?
[Galaxy Note 4 Q&A, Help & Troubleshooting] callumbr1:
I have exactly the same emmc_read fail. My note 4 won't even turn on, no recovery mode no download mode can't connect to pc and won't charge. It's dead. It's out of warranty now so do you think I should take it and try to have it repaired. There's a Samsung centre 10 minutes from me in Leeds. If they did yours for free maybe there's a chance they could do mine. Might aswell try :)