mmc_read failure Note 4 n910w8 Rogers!! - Galaxy Note 4 Q&A, Help & Troubleshooting

Here is the story,
I flashed Marshmallow on my note 4 n910w8 via odin (I had 5.1.1). After it was done I noticed that the phone got laggy and warm. It would sometimes not boot/restart or it would shut down after it freezes for sometime. I would get the download page with mmc_read failure in red, I would pull out the battery and try again.
What I did:
*Unrooted the phone through SuperSu and flashed Twrp throughout (because it gave other errors and I had to do it again and again after each attempt)
*I tried flashing through twrp but I got the "no md5" error
*Flashed the stock ROM 6.0.1 with PIT since it gave the PIT error on odin
*Wiped cache/data/factory reset multiple times.
*I used both Kies and Smartswitch and was not successful (either read or write failure)
*Flashed the stock 4.4.1 (the original, It could not boot up once) so I returned to the stock 6.0.1
*The phone boots up 3 out 5 times and I was able to watch a full movie on Netflix and browse the web and google maps. But as soon as I locked it, It shut off and did not power up (until i took out the battery and let it cool down).
Where I went:
*A Samsung repair agent here in Montreal said that most of the time it is the Mob and that it would cost 300-400$ CAD to replace
*I went to other repair shops, a few hinted that it might just a matter of reprogramming the Mob and that it involved a risk of bricking the phone for good.
N.B: It is not under warranty and I'm not on contract, It is my own phone.
My question(s): Is there something else I could try? Is there someone who fixed the issued (Assuming it is not hardware) maybe and unbrick fix or something? And also, it there anyway to thoroughly wipe out the old installations so I could start anew?
Also I consider myself pretty knowledgeable. Or I at least learn quick. Do not hesitate to suggest something coarse for me to try. Worse comes to worse, Ill sell it on eBay for part, since it it in mint condition.

It's definitely a hardware issue, trust me.
But all the problems can be bypassed by rooting your device and installing Wake Lock app from the playstore and activate PARTIAL_WAKE_LOCK, enable the notification and start on boot. This will fix all the lag and the crashes.
This will not, however, fix the boot problems. So if your device ever runs out of battery or turns off, booting it is gonna be a hassle still as before. If you ever get stuck trying to boot it properly to homescreen however, I discovered a foolproof method for that with 10/10 success rate.
I know it might sound weird, but I'm seriously not trolling you. Take out the battery and place the phone & the battery in your fridge for at least 5 minutes until your device gets cold. Put the battery back in and boot into 'download mode'. You'll notice that it'll goes into download mode perfectly. Take out the battery again and just boot normally. You'll be back into homescreen in no time. This is how I know it's a hardware problem, lol.
With these alternative fixes, I'm hoping that I can keep my phone alive for at least another 2 years. Better than forking out another $500~ for a new device imho.

The Sponge said:
It's definitely a hardware issue, trust me.
But all the problems can be bypassed by rooting your device and installing Wake Lock app from the playstore and activate PARTIAL_WAKE_LOCK, enable the notification and start on boot. This will fix all the lag and the crashes.
This will not, however, fix the boot problems. So if your device ever runs out of battery or turns off, booting it is gonna be a hassle still as before. If you ever get stuck trying to boot it properly to homescreen however, I discovered a foolproof method for that with 10/10 success rate.
I know it might sound weird, but I'm seriously not trolling you. Take out the battery and place the phone & the battery in your fridge for at least 5 minutes until your device gets cold. Put the battery back in and boot into 'download mode'. You'll notice that it'll goes into download mode perfectly. Take out the battery again and just boot normally. You'll be back into homescreen in no time. This is how I know it's a hardware problem, lol.
With these alternative fixes, I'm hoping that I can keep my phone alive for at least another 2 years. Better than forking out another $500~ for a new device imho.
Click to expand...
Click to collapse
Thank you very much for your reply, I take it you have the same problem? I will try Wake Lock. And also I'm way ahead of you in the freezing game. Leave for 10mins in the freezer and you can basically flash anything. Also, do you a custom ROM would help?

Related

[Q] Galaxy S4 died after 4.3 update

heya guys,
I'm on stock FW on my GS4S i9505 and yesterday morning i update to 4.3 OTA.
It was working all day just fine without issues or lag for the matter.
Today morning when i woke up, my phone was plugged into the charger and was turned off.
I turned it on by couple of mins later it would freeze and wont unlock, just black screen with a red light flashing on the top left of the phone.
I had to pull out the battery and put it back everytime i wanted to try and boot it.
I did that 3 times within 10mins and the 4th time it just stopped turning on all together.
Anyone has this issue and maybe can give tips on how to fix this if possible?
Thanks in advance.
re: auto updates
Smokie Smokerson said:
heya guys,
I'm on stock FW on my GS4S i9505 and yesterday morning i update to 4.3 OTA.
It was working all day just fine without issues or lag for the matter.
Today morning when i woke up, my phone was plugged into the charger and was turned off.
I turned it on by couple of mins later it would freeze and wont unlock, just black screen with a red light flashing on the top left of the phone.
I had to pull out the battery and put it back everytime i wanted to try and boot it.
I did that 3 times within 10mins and the 4th time it just stopped turning on all together.
Anyone has this issue and maybe can give tips on how to fix this if possible?
Thanks in advance.
Click to expand...
Click to collapse
You will need to go to SamMobile.com and download the official odin flash firmware
for your phone's exact model and flash it using Odin.
That will get the phone into good working condition with the stock 4.2 firmware.
After that you can use the phones built-in updating system again and most likely it
will work just fine. Just be sure that the battery is at least half full before the phone
starts the auto-update process.
Perhaps you installed some app or game from the playstore which did not play nice
with your phone and caused the 4.3 update to get stuck or it could have been the
battery if it did not have enough charge in it.
You should try to get the phone into download mode to see if it can be Odin flashed.
Hold the volume down key at the same time while holding the the power key down
for 20-30 seconds and see if it goes into download mode.
If it does you have nothing to worry about.
NOTE: before trying download mode be sure to remove the battery for 5 seconds
and replace it, making sure the phone is in a power off state before trying to boot
it into download mode.
Misterjunky said:
You will need to go to SamMobile.com and download the official odin flash firmware
for your phone's exact model and flash it using Odin.
That will get the phone into good working condition with the stock 4.2 firmware.
After that you can use the phones built-in updating system again and most likely it
will work just fine. Just be sure that the battery is at least half full before the phone
starts the auto-update process.
Perhaps you installed some app or game from the playstore which did not play nice
with your phone and caused the 4.3 update to get stuck or it could have been the
battery if it did not have enough charge in it.
You should try to get the phone into download mode to see if it can be Odin flashed.
Hold the volume down key at the same time while holding the the power key down
for 20-30 seconds and see if it goes into download mode.
If it does you have nothing to worry about.
NOTE: before trying download mode be sure to remove the battery for 5 seconds
and replace it, making sure the phone is in a power off state before trying to boot
it into download mode.
Click to expand...
Click to collapse
Thanks for the reply dude.
I'd love to do that, but i dont see how this is possible since the phone doesnt boot up at all anymore.
Any ideas?
Maybe your battery is dead? Because it's known issue on Galaxy S4 phones.
Try another charger.
I tried with my wife's S4 battery and my colleague's S4 battery.
Also tried with 3 different charges that came with the S4, no dice... :/
I had to take it back to the store, it was under warranty still.. they are sending it back to Samsung and will get it back in 2-3 weeks, same phone repaired or a refurb i guess.
After doing more search and with the help of some falks from #Android @ EFNET, we came to the conclusion that its an issue with the EMMC chip just like the first generation of Note 2 and S3.
What's pissing me off is that Samsung fixed the issue on Note 2 with a new patch of phones, so newer phones didnt have the EMMC issue as far as i can tell. SO why the hell would they still use it for the S4 is beyond me.
Just a word of advice, if this happens to anyone, make sure you run a backup as soon as it boots back up the first time.
In my case, it booted 3 times by removing the battery and putting it back and froze 3 times, there was no 4th.
If i tried to backup the phone the first or second time it booted, i could still have my data to be restored on the new repaired phone.
This should be marked as closed unless some other people with the same issue want to discuss it here.

Galaxy Note 4 constant freezing & restarting!

Hi there,
So my galaxy note 4 is having some serious problems for the last couple of days and it's really starting to bother me. I've tried doing everything I can find online so far but to no avail I've had no luck at all. Basically, my phone constantly keeps freezing and restarting. It will crash for quite a period of time then restart itself, crash and restart. It probably crashes and freezes about 80-90 times a day? More if I'm trying to use it of course (It also resets itself when not using it).
I've tried everything, bought a replacement (genuine) battery and not fixed it. Got to the point where I seen online about doing a factory reset so I backed everything up to my computer, started the factory reset and when I was going through the setup of logging into google and samsung account, it continues to crash and freeze all over again. (It crashed & restarted whilst retrieving my apps from google, thus I had to reinstall my apps again manually after I finally got it setup again).
To make matters worse, I cancelled the insurance cover last month and only a few days ago this started happening. I've not dropped the phone or damaged it in anyway, screen is completely perfect too. It just constantly crashes and restarts on it's own. Get a phone call and it crashes, using google maps, crash. It's beyond unusable now. I still have 4 months left of the contract before I'm due an upgrade and I really don't think it will last me that long.
Can someone PLEASE help? Suggestions would be so helpful!!!
Thank you!
P.S Phone isn't rooted, only using Nova Launcher prime.
Sounds like your battery is on its way out. Have you tried a new battery?
Already mentioned in post above
tiguy99 said:
Sounds like your battery is on its way out. Have you tried a new battery?
Click to expand...
Click to collapse
QCube said:
I've tried everything, bought a replacement (genuine) battery and not fixed it.
Click to expand...
Click to collapse
Earlier in the week I had an error I've not seen before. Phone restarted and went to black screen sort of looking at a recovery screen with android logo and in the centre of the screen was the message
"Kernal Panic" with some information on the top. This only has happened the one time and hasn't happened since. Took the battery out and restarted again...
Try hardreset or flash via odin
Krprem said:
Try hardreset or flash via odin
Click to expand...
Click to collapse
How do I go about doing either of these....
Still happening and it's driving me insane, It won't last me until the end of my contract (January)
Its rebooting 80-90 times in ONE day? Good god! Have the phone turned off then. Unnecessary pressure is being put on the phone mate!
Factory Reset isn't going to solve it anyway, its for tiny problems. Your system is somehow messed up badly.
Do what the above member said. Flash a stock ROM via Odin. But before that you need to completely wipe the phone. To completely wipe you need a custom recovery like TWRP. So flash it now, root the phone, then reboot into TWRP and use the Advanced Wipe section to wipe everything (external SD not needed), then reboot the phone in Download mode, and flash the latest stock ROM via Odin.
You are now part of a large group of us having the same issues. Several things have been tried. One thought is that the motherboard is faulty. Replacing it would be expensive. Download the app "wake lock" and set it to partial_wake_lock. Don't ask me why it works, but it does. Apparently the phone goes nuts when the screen tries to go off, the partial lock keeps it from crashing. That makes the phone usable, hopefully a permanent solution will become available. ;( The only time it goes nutty again is if the battery runs down and when I restart, the app is not running. Going back to the back and setting it to partial has allowed me to play games, etc for extended periods of time and no problems. It shouldn't be that way, and I really suspect the marshmallow update and then security update screwed it up, it was fine before that.
QCube said:
Hi there,
So my galaxy note 4 is having some serious problems for the last couple of days and it's really starting to bother me. I've tried doing everything I can find online so far but to no avail I've had no luck at all. Basically, my phone constantly keeps freezing and restarting. It will crash for quite a period of time then restart itself, crash and restart. It probably crashes and freezes about 80-90 times a day? More if I'm trying to use it of course (It also resets itself when not using it).
I've tried everything, bought a replacement (genuine) battery and not fixed it. Got to the point where I seen online about doing a factory reset so I backed everything up to my computer, started the factory reset and when I was going through the setup of logging into google and samsung account, it continues to crash and freeze all over again. (It crashed & restarted whilst retrieving my apps from google, thus I had to reinstall my apps again manually after I finally got it setup again).
To make matters worse, I cancelled the insurance cover last month and only a few days ago this started happening. I've not dropped the phone or damaged it in anyway, screen is completely perfect too. It just constantly crashes and restarts on it's own. Get a phone call and it crashes, using google maps, crash. It's beyond unusable now. I still have 4 months left of the contract before I'm due an upgrade and I really don't think it will last me that long.
Can someone PLEASE help? Suggestions would be so helpful!!!
Thank you!
P.S Phone isn't rooted, only using Nova Launcher prime.
Click to expand...
Click to collapse
Which version is your note 4? verizon? att? tmobile? sprint? etc united states variant? other country? This helps find out if others that are having the same problem are on the same setup as you and more importantly tells me if I'm likely to have a problem with mine getting ready to come. :laugh:
ithehappy said:
Its rebooting 80-90 times in ONE day? Good god! Have the phone turned off then. Unnecessary pressure is being put on the phone mate!
Factory Reset isn't going to solve it anyway, its for tiny problems. Your system is somehow messed up badly.
Do what the above member said. Flash a stock ROM via Odin. But before that you need to completely wipe the phone. To completely wipe you need a custom recovery like TWRP. So flash it now, root the phone, then reboot into TWRP and use the Advanced Wipe section to wipe everything (external SD not needed), then reboot the phone in Download mode, and flash the latest stock ROM via Odin.
Click to expand...
Click to collapse
80-90 times in one day is probably being generous. I've not actually counted how many times it restarts but If I need to use my phone I can guarantee it will be restarting a couple of times. Driving using navigation *Crashes* Inbound phone call *Crashes* get text message *crashes* all followed by the phone restarting. Practically unusable.
phonepie said:
Which version is your note 4? verizon? att? tmobile? sprint? etc united states variant? other country? This helps find out if others that are having the same problem are on the same setup as you and more importantly tells me if I'm likely to have a problem with mine getting ready to come. :laugh:
Click to expand...
Click to collapse
Vodafone UK - Samsung Galaxy Note 4 / SM-N910F running Android 6.0.1
grizzylemon said:
You are now part of a large group of us having the same issues. Several things have been tried. One thought is that the motherboard is faulty. Replacing it would be expensive. Download the app "wake lock" and set it to partial_wake_lock. Don't ask me why it works, but it does. Apparently the phone goes nuts when the screen tries to go off, the partial lock keeps it from crashing. That makes the phone usable, hopefully a permanent solution will become available. ;( The only time it goes nutty again is if the battery runs down and when I restart, the app is not running. Going back to the back and setting it to partial has allowed me to play games, etc for extended periods of time and no problems. It shouldn't be that way, and I really suspect the marshmallow update and then security update screwed it up, it was fine before that.
Click to expand...
Click to collapse
I'm gonna give this a go and hopefully it'll help! Thanks for the advice. Funnily enough, for a couple of months the phone has been prevented from the screen going off. I get a text or a notification and the screen would stay on until I hit the power button to turn it back off. Get a text in the middle of the night and I'd wake up to a boiling hot phone the next day, almost too hot to even keep in the hands. This literally frustrated me beyond belief and had to get a new battery and all sorts of complications. Also you mention the android update which made me think, I NEVER had this issue before I installed the security update for 6.0.1 - I put my money on something really stupid that's sincerely knackered my phone for certain!
While upgrading a phone, especially for major upgrades like from LP to MM, OTA method should always be avoided. You MUST do a clean flash of the ROM, otherwise you are bound to have problems. 80% of time people complain because they didn't flash the ROM cleanly, so whatever you want to do now, do it, but if it doesn't solve it (very likely it won't), then kindly flash the ROM via Odin after a full wipe. And if even that doesn't solve it then its hardware.
QCube said:
80-90 times in one day is probably being generous. I've not actually counted how many times it restarts but If I need to use my phone I can guarantee it will be restarting a couple of times. Driving using navigation *Crashes* Inbound phone call *Crashes* get text message *crashes* all followed by the phone restarting. Practically unusable.
Vodafone UK - Samsung Galaxy Note 4 / SM-N910F running Android 6.0.1
I'm gonna give this a go and hopefully it'll help! Thanks for the advice. Funnily enough, for a couple of months the phone has been prevented from the screen going off. I get a text or a notification and the screen would stay on until I hit the power button to turn it back off. Get a text in the middle of the night and I'd wake up to a boiling hot phone the next day, almost too hot to even keep in the hands. This literally frustrated me beyond belief and had to get a new battery and all sorts of complications. Also you mention the android update which made me think, I NEVER had this issue before I installed the security update for 6.0.1 - I put my money on something really stupid that's sincerely knackered my phone for certain!
Click to expand...
Click to collapse
Thanks for letting me know your version. Hopefully it wont affect mine since mine is US Verizon. But out of curiosity have you checked for even the slightest sticky button? I've had phones where a button started to get tacky and would cause it to keep the screen on or go on and off like what you're saying. May not even feel like a sticky button. Do they all click very responsive? or do any feel like they have a dull thud experience?
phonepie said:
Thanks for letting me know your version. Hopefully it wont affect mine since mine is US Verizon. But out of curiosity have you checked for even the slightest sticky button? I've had phones where a button started to get tacky and would cause it to keep the screen on or go on and off like what you're saying. May not even feel like a sticky button. Do they all click very responsive? or do any feel like they have a dull thud experience?
Click to expand...
Click to collapse
The volume rocker and power button feel really loose but this isn't really something new. Something I have noticed is when I take the cover off the back, the battery barely stays in itself. If holding screen upwards and battery cover off then It doesn't hold the battery which made me possibly think that perhaps the battery does not situate properly and doesn't deliver enough power (or too much) but this was just one of my theories into why the hell my phone is acting this way.
Edit:
Forgot to add I'm running the security patch 01/08/2016
QCube said:
The volume rocker and power button feel really loose but this isn't really something new. Something I have noticed is when I take the cover off the back, the battery barely stays in itself. If holding screen upwards and battery cover off then It doesn't hold the battery which made me possibly think that perhaps the battery does not situate properly and doesn't deliver enough power (or too much) but this was just one of my theories into why the hell my phone is acting this way.
Edit:
Forgot to add I'm running the security patch 01/08/2016
Click to expand...
Click to collapse
Are you able to wedge a folded small piece of paper between the bottom edge of the battery and the phone to make the battery fit tighter? I mean it's not good to have a loose battery. But I can't see how that would cause the screen to stay on. If anything I would think it would cause the phone to shut off or reboot.
QCube said:
80-90 times in one day is probably being generous. I've not actually counted how many times it restarts but If I need to use my phone I can guarantee it will be restarting a couple of times. Driving using navigation *Crashes* Inbound phone call *Crashes* get text message *crashes* all followed by the phone restarting. Practically unusable.
Vodafone UK - Samsung Galaxy Note 4 / SM-N910F running Android 6.0.1
I'm gonna give this a go and hopefully it'll help! Thanks for the advice. Funnily enough, for a couple of months the phone has been prevented from the screen going off. I get a text or a notification and the screen would stay on until I hit the power button to turn it back off. Get a text in the middle of the night and I'd wake up to a boiling hot phone the next day, almost too hot to even keep in the hands. This literally frustrated me beyond belief and had to get a new battery and all sorts of complications. Also you mention the android update which made me think, I NEVER had this issue before I installed the security update for 6.0.1 - I put my money on something really stupid that's sincerely knackered my phone for certain!
Click to expand...
Click to collapse
Let me know how it goes. There are other threads about same issue. Most of us have tried reflashing, wiping everything, custom roms, going back to stock, trying to downgrade, taking out the sim card, taking out the sd card, not having both in at same time, brand new battery, I think even putting the battery in the freezer momentarily, etc. etc. Nobody seems to have had any real luck with it, except those who were under warranty and got a new phone, or are capable and wiling to exchange some hardware. I just find it odd that it happened all of a sudden after updates and recently to many people.. Still, I keep coming here hoping someone will have great news. Mine started with marshmallow, but definitely got worse with the security update.
grizzylemon said:
Let me know how it goes. There are other threads about same issue. Most of us have tried reflashing, wiping everything, custom roms, going back to stock, trying to downgrade, taking out the sim card, taking out the sd card, not having both in at same time, brand new battery, I think even putting the battery in the freezer momentarily, etc. etc. Nobody seems to have had any real luck with it, except those who were under warranty and got a new phone, or are capable and wiling to exchange some hardware. I just find it odd that it happened all of a sudden after updates and recently to many people.. Still, I keep coming here hoping someone will have great news. Mine started with marshmallow, but definitely got worse with the security update.
Click to expand...
Click to collapse
why don't you reflash you device with supported PIT file and stock F.W ?
QCube said:
Hi there,
So my galaxy note 4 is having some serious problems for the last couple of days and it's really starting to bother me. I've tried doing everything I can find online so far but to no avail I've had no luck at all. Basically, my phone constantly keeps freezing and restarting. It will crash for quite a period of time then restart itself, crash and restart. It probably crashes and freezes about 80-90 times a day? More if I'm trying to use it of course (It also resets itself when not using it).
I've tried everything, bought a replacement (genuine) battery and not fixed it. Got to the point where I seen online about doing a factory reset so I backed everything up to my computer, started the factory reset and when I was going through the setup of logging into google and samsung account, it continues to crash and freeze all over again. (It crashed & restarted whilst retrieving my apps from google, thus I had to reinstall my apps again manually after I finally got it setup again).
To make matters worse, I cancelled the insurance cover last month and only a few days ago this started happening. I've not dropped the phone or damaged it in anyway, screen is completely perfect too. It just constantly crashes and restarts on it's own. Get a phone call and it crashes, using google maps, crash. It's beyond unusable now. I still have 4 months left of the contract before I'm due an upgrade and I really don't think it will last me that long.
Can someone PLEASE help? Suggestions would be so helpful!!!
Thank you!
P.S Phone isn't rooted, only using Nova Launcher prime.
Click to expand...
Click to collapse
Aside from the previously proposed wake lock solution, members in the T-Mobile Note 4 threads have experienced limited success with a downgrade to LP from MM.
From my reading, these issues seem to be common across all Snapdragon models, not to say it Exynos is excluded (I don't frequent Exynos threads).
​
himuslg123 said:
why don't you reflash you device with supported PIT file and stock F.W ?
Click to expand...
Click to collapse
I tried that and it didn't work for me. The only surefire solution is a replacement device, but even then there's no guarantee the device won't start acting up in the future.
pls help stuck in download mode
this is the issue I'm getting...I did a complete data wipe using twrp...now stuck on this screen...cant even push files...device not recognized in adb or fastboot mode....
what to do...??
imgur(dot)com/a/gKPaL
Well a new motherboard was the only thing that fixed it for me, replaced under the 2 year warranty but I had to wait a while for parts. What is interesting is that the phone is much faster, the battery life much better than when it was new. Also it now barely gets warm using google maps - before it got quite hot. It would be very interesting to find out what percentage of Note 4's have been going down with is problem - mine was a fairly early one - was Samsung rushing to beat Apple two years ago and a bad batch of parts used? I don't know -we need some answers on what is the problem to be sure.
Just a personal experience and thus advice, please don't keep flashing bunch of stuffs every other day. The more your eMMC gets used more chance of your phone getting messed up. This is how my Note 3 died, kept flashing this and that, and did the same on Note 4 too, but have now stopped. I don't know whether there's an endurance rating on these eMMCs used or not but this is what I think, I could be wrong, please quote me in that case.
hathertonwood said:
Well a new motherboard was the only thing that fixed it for me, replaced under the 2 year warranty but I had to wait a while for parts. What is interesting is that the phone is much faster, the battery life much better than when it was new. Also it now barely gets warm using google maps - before it got quite hot. It would be very interesting to find out what percentage of Note 4's have been going down with is problem - mine was a fairly early one - was Samsung rushing to beat Apple two years ago and a bad batch of parts used? I don't know -we need some answers on what is the problem to be sure.
Click to expand...
Click to collapse
Wow, that sounds promising. I'm sending mine for replacement, and although I'm not getting a new MB installed, hopefully the incoming unit will be similar in performance to yours.
ithehappy said:
Just a personal experience and thus advice, please don't keep flashing bunch of stuffs every other day. The more your eMMC gets used more chance of your phone getting messed up. This is how my Note 3 died, kept flashing this and that, and did the same on Note 4 too, but have now stopped. I don't know whether there's an endurance rating on these eMMCs used or not but this is what I think, I could be wrong, please quote me in that case.
Click to expand...
Click to collapse
Your reasoning sounds plausible, but my phone suffered similar issues and I only flashed my unit 2-3 times in the 14 months I had it.

Oneplus two does not boot.

Hello! Okay so this is a weird issue with my phone. It started in November and i had to switch to an older galaxy s5 which is pretty slow for today's standards. Anyways one day while it was charging it started to reboot and didn't stop. I didn't think much of it. I took the phone apart to make sure it wasn't shorting out or anything. I reset everything on the phone. I replace about half the phone. I really need the phone to work because I need the speed. So the full problem the phone would turn on and boot but right when it going to the lock screen it would restart. Sometimes it boots all the way but it crashes and reboots about 1 minute of use. I cannot find a solution. I tried flashing a the original rom and it still didn't work. I put the boot loader back to stock. I tried to reflash the kernel, that also didn't work. If watched a ton of tutorials but no one seems to have the same problem.

Canadian Note 4 (N910W8) Bootloop Issues

For some reason my note 4 (n910w8) started acting odd recently. Whenever I try to turn it on it gets stuck at the boot-loader with "Powered by Android" on the bottom of the screen and sometimes reboots only to get stuck again. I tried to go into recovery to factory wipe the device but when I do it says "E: failed to mount /preload (No such file or directory)". I can go into download mode just fine however, with no mmc error statements there that others have had. I have tried flashing different firmwares (all 6.0 that I can tell) but they all still do the same.
The weird thing is however, that if I put the phone into the fridge for awhile, it seems to work fine (albeit for a little bit while the phone is cold). When the phone starts to heat up I notice the freezes come back again until the phone just randomly reboots and the whole process of not booting starts again.
Is there any way to fix this? Thanks in advance!
It looks like your having a motherboard issue. Sad times! Im on my 2nd Note 4 (W8 model) now. 1st one has the eMMC read failure. And this one im typing on on now will lock up consistantly if i dont have a wakelock program running.
Best bet is this. Get it cold again. Then flash your rom (or just stick with what you have now). Then install this Wakelock app below And set it To 4 (Partial_Wake_lock). And then hit options amd make sure To "Autostart on boot".
https://play.google.com/store/apps/details?id=eu.thedarken.wl
Hopefully this fixes the issue for you. I dont take And credit for this. I found the same issue here on XDA And someone provided this solution.
If this does work for you, great. But its only a temp solution. Your battery will take a small hit as well since the CPU is consistantly online. You need either a motherboard replacement or time for another phone. PersonalIy i think this my last Note 4 as im seeing way too many issues. Maybe time for the Note FE or Note 8 (later this year).
As well if this does work try not to reboot of you can help it. I find my boot times are increasing. Sometimes needing a battery pull or a cache wipe in TWRP to boot again.

Galaxy Note 4 keeps freezing after 2mins usage, gets in bootloop

Hello, so i've had this Note 4 for about 2 years, i had no problems with it thus far until recently ( 3 hours ago actually) i was just texting and browsing Instagram and out of no where the screen froze, it became unresponsive and the screen went black and started constantly vibrating so i quickly pulled the battery out and put it back in again, tried to start it again and it got stuck on the Samsung logo, i went for recovery mode and tried to look up latest cashe log and it froze right there too and restarted, pulled battery out and in again, tried to get into Recovery mode for a second time and a dm-verity verification failed error on the lower left corner popped up, i selected "Restart phone" and it got stuck on the Samsung logo again, battery in-out, tried to get into Recovery mode for a third time to do a factory reset but this time it got stuck whilst trying to boot onto recovery, and i had to out-in battery again, tried several times to get into recovery and it didn't work, i just gave up and started searching, then after 14 minutes i decide to give it another try and it normally booted up! i inserted in my PIN and browsed the apps for about 2mins but it froze, again, and the whole cycle kept repeating i let it cool down for 15mins and it boots up normally but freezes again after a few minutes of usage, i noticed that it insanely overheats before freezing (especially right above the SIM card area) and the four CPU cores are showing 2469MHz and on 100% (But that's also the case when the phone just boots up right?), Now i basically can't access recovery mode and i'm stuck with a Freeze-Reboot looped and i'm left with no other option but a full Stock ROM flash, the thing is i can't even get into recovery to do a full wipe before flashing in the ROM, can i just flash in again a TWRP recovery? and is there any way to fix this without having to do a full Stock ROM flash (i Tried the wake lock app it didn't work) and i'm on Android 5.0.1, this has JUST happened today and never before. i'm hoping this isn't a hardware issue.
UPDATE: i have just noticed something rather interesting, the phone immediately freezes and goes nuts with the reboots and failed recovery modes instantly after i connect it to a wifi network, and exactly when it's attempting to "send report", a sending report sign shows up in the notification bar and it immediately screws up the phone until i do another Factory reset, i just did another one without connecting to a wifi network and i've already gone 40mins with it without any issues but perhaps it's just because it's not on heavy usage?
Sounds like you have the eMMC issue.
You can try and reflash with Odin. Get the right version from Sammobile.
Do yu get to download mode in any of the scenarios you describe?
Try WakeLock again and select the level to 4
Having the same issue
I'm having the same issue and don't have any idea how to help, just hoping someone out there knows...:crying:
Cybrid013 said:
I'm having the same issue and don't have any idea how to help, just hoping someone out there knows...:crying:
Click to expand...
Click to collapse
If you have the Snapdragon version - it's highly possible to have the emmc problem. Which is a bummer and the phone is like dead.
Unless you can buy another 910C motherboard and swap it.
Sorry.
What is short name for emmc?
jjoeshua said:
What is short name for emmc?
Click to expand...
Click to collapse
embedded multimedia controller
Just been having a very similar problem. I posted this elsewhere, but it may be helpful:
"My issue was that I needed to recover data, docs, photos, phone numbers etc. When boot looping the note 4 got very hot . In particular around and to the left of the camera (looking at the rear). Thinking it could possibly be the dreaded eMMC problem which also manifests itself by creating heat, I thought cooling the device might help. I placed the Note on a cooler box freezing block and voilà! No boot loop. I was able to remove all, but necessary apps and do a full copy to my PC. Storage was reduced from around 90% to 50% and memory 80% to 60%. It's now been stable for 12 hours, but the jury is still out. Next will be full reset with he latest available firmware 6.0.1 as mine was still on 5.1.1."
Also now downloaded a eMMC bug check that says my eMMC chip is 'sane'. Guess we'll see

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