Database Users

[i9505] Help needed

Hi XDA,
I've been playing around with my phone, all was fine until I downloaded SGS4Flasher from the play store and flashed something onto my phone. Since then, It's been mayhem to get back right again.
I installed a new PIT file, this seemed to fix the problem I had. I then installed OTA updates, which has changed my device Baseband version to i9505xxuemj7 from i9505xxubmga.
I used to be running android 4.2.2, but from simply installing Cyanogenmod through recovery, my phone could run Android 4.3.
Now my phone is running as normal again - Except every so often it'll crash and then get stuck in the bootloop, so I have to remove my battery and give it a few minutes before re-inserting and powering on my device for it to work properly. This means I cannot play games, tether my internet for too long etc. It's rather frustrating having such a nice phone yet not being able to use it.
Due to being new at this, I've kinda put up with the problem for a little while now - But its getting ridiculous now.
Can someone help me, I'm not good with all the terms of PDA, CSC etc - I'd like to be explain to taught what to do in plain black and white please, I know this can be daunting and frustrating, but so is this problem of mine that I've caused.
If you need any more information than what I have provided please just ask.
I'm from the UK and I'm using a pay monthly sim from Vodafone.
I am using the i9505 device with qualcomm processor - Jfltexx
If anything, I don't care about android 4.2.2 or android 4.3, they both seemed decent enough to me, but ROM wise, I absolutely loved Cyanogenmod. But anything that'll make my phone work without crashing, please help.
Do I need to find a new Kernel? PIT? I'm not sure what to call it? CSC? PDA?
All I'm used to is booting my phone into recovery mode, choosing install, and then choosing Cyanogenmod from my SD_CARD.
I've used ODIN before to do something with files, following tutorials from the internet - I think this was ROOTING Clockword Recovery Mod, or TeamWIN RP or something? I believe these are the files that make the RECOVERY mode on my phone that allows me to install Cyanogenmod through my SD Card.
Please simplify this as much as possible for me, even if it comes across as insulting ... an A B C guide would be appreciated highly.
Thanks,

So you do have this issues with Cyanogenmod and with the stock rom? I've had similair issues when my battery was malfunctioning. Can you check with a different battery?

Lennyz1988 said:
So you do have this issues with Cyanogenmod and with the stock rom? I've had similair issues when my battery was malfunctioning. Can you check with a different battery?
Click to expand...
Click to collapse
The phone is virtually brand new - I'll get another battery yes, but It wont be the exact same one that comes with the device - It'll probably be a cheap Chinese make from Ebay for about £5.
The battery has been acting strange, and I'm not sure if its just me or not, but the battery feels sorta swelled as opposed to being completely flat.
I'd have thought It'd be an issue with the software/firmware seeing as that was what I had been messing around with.
I never had the problem with cyanogenmod, but cyanogenmod was before I started playing with things I shouldn't have.

Yes, its a common problem with the S4 that the battery becomes damaged. I think that if you replace your battery your phone will be working again. Because a swollen battery is a damaged one.
You could also claim warranty for your battery. Samsung already stated that some S4 were shipped with faulty baterys and that they will replace them for free.

Lennyz1988 said:
Yes, its a common problem with the S4 that the battery becomes damaged. I think that if you replace your battery your phone will be working again. Because a swollen battery is a damaged one.
You could also claim warranty for your battery. Samsung already stated that some S4 were shipped with faulty baterys and that they will replace them for free.
Click to expand...
Click to collapse
Even though I've now voided my knox warranty?

Yes even then. I think you will only have to send the battery in to Samsung
And besides, I see you live in the UK. Under European Law the shop has to replace the battery for you and rooting etc does never void your rights.

Top urgent help - weird issue

Hi XDA Superheroes,
Need your help before I got bonkers with my new note 4. I am currently in UAE and here SM910C Exynos is the one which is selling most and not the 910F snapdragon. Somehow i managed to get 910F and was informed there is no warranty as they are not supported by the main dealer of UAE however will be supported by Samsung service centre. When i got the phone i saw that the knox was tripped (this i should have checked first thing at the shop but i was busy with other services testing- damn me). I was aware it was a second had phone and also the serial number is wiped off but IMEI is there. The main issues with the phone is battery charging in Power Saving Mode...secondly it was on some nordic rom and phone info was showing serial as 0000000. the phone does not charges normally but if I put on power saving mode it works .
Second issue - IMEI changed after i flashed to BTU 4.4.4 :silly:...seriously i don't under how and why and what...But that my concern.
THE MAIN ISSUES IS CHARGING SO EVEN AFTER ROOTING AND USING CUSTOM EMOTION KERNEL IT HAS NOT HELPED.
Can anyone throw some light as whats going on. I will try to check if someone has note 4 and swap the battery as that may be issues. I cant expect Samsung to support and the only option is to fight with the mobile shop guy and get the 910 C.
Please do let me you suggestion at the earliest as tomorrow evening time it will be show down:fingers-crossed:

SM-N910F - mmc_read_failed Error

Hi All,
I have a SM-N910F that I have been using as my daily phone for about 18 months. I have NEVER ROOTED.
Recently I started encountering lags, freezes and restarts. In general, the phone became unusable.
I factory reset the phone and set the whole phone again from scratch, but in a few days I'm back where I was.
If I restart the phone, OR power down, the phone does not start. I have to pull the battery out, and re-insert for the phone to start again.
I even tried Firmware Recovery via KIES but that too failed, and after that I'm beginning to see a new variant to my problem.
Now, the phone mostly boots into Download Mode, where I see the below:
Could not do normal boot.
ddi : mmc_read failed
ODIN MODE (HIGH SPEED)
PRODUCT NAME: SM-N910F
CURRENT BINARY: Samsung Official
System Status: Custom
REACTIVATION LOCK: OFF
KNOX WARRANTY VOID: 0x1 (0)
I'm a little worried about the above highlighted lines, as I plan to take the Phone down to Samsung (Samsung Chat confirmed that the phone is still in Warranty).
As I have never rooted the phone, I'm quite surprised why the phone is showing System Status as Custom. Is this something to worry about, or should it be fine and considered still under warranty?
Any advice would be great, as I really need to get this phone working normal again.

The problem is "mmc_read failed" message. It seems that your internal memory got damaged. It's like a computer without a hdd. Good luck
You are fine for warranty.

popic_u said:
The problem is "mmc_read failed" message. It seems that your internal memory got damaged. It's like a computer without a hdd. Good luck
You are fine for warranty.
Click to expand...
Click to collapse
Thanks but the System Status Custom message, is that normal??
And what will they do under Warranty? that is what will they change?

dg170775 said:
Thanks but the System Status Custom message, is that normal??
And what will they do under Warranty? that is what will they change?
Click to expand...
Click to collapse
No its not normal, if you've never rooted it, it should be Official and not Custom.
You bought it from a 2nd hand or new ?
EDIT : And its the same for the "Knox 0x1(0)" wich isn't normal too, it should be on 0x0 and not 0x1.

It was bought new.. Infact I pre ordered
Sent from my Nexus 6P using Tapatalk

dg170775 said:
It was bought new.. Infact I pre ordered
Sent from my Nexus 6P using Tapatalk
Click to expand...
Click to collapse
Are you really sure you've never attempted to root it or did something wich can void the knox warranty ?

KeTuRr74 said:
Are you really sure you've never attempted to root it or did something wich can void the knox warranty ?
Click to expand...
Click to collapse
No.. only thing out of the ordinary that I tried was to try Emergency Firmware recovery via KIES, but that too failed halfway, with some messages about unable to write or something
So, what do I do now? To get it back on warranty? Problem is that phone's pretty much un-usable, to even try anything at the moment.

dg170775 said:
Hi All,
Any advice would be great as I really need to get this phone working normal again.
Click to expand...
Click to collapse
Taking a look on Reddit and you will see hundreds of comments complaining about MMC errors for Note 4. I too just got it and was pissed.
Note 4's are dropping like fly's after a year and half of use. Like Xbox and RROD.
I called Samsuck and they told be to fly a kite and wouldn't cover anything.
Call them and give them crap! Hopefully the calls will add up.
To fix, I found a broken Note 4 on eBay and swapped the working motherboard from it. If you need any help fixing it just PM.
The phone will only get worse over time.

dg170775 said:
Hi All,
I have a SM-N910F that I have been using as my daily phone for about 18 months. I have NEVER ROOTED.
Recently I started encountering lags, freezes and restarts. In general, the phone became unusable.
I factory reset the phone and set the whole phone again from scratch, but in a few days I'm back where I was.
If I restart the phone, OR power down, the phone does not start. I have to pull the battery out, and re-insert for the phone to start again.
I even tried Firmware Recovery via KIES but that too failed, and after that I'm beginning to see a new variant to my problem.
Now, the phone mostly boots into Download Mode, where I see the below:
Could not do normal boot.
ddi : mmc_read failed
ODIN MODE (HIGH SPEED)
PRODUCT NAME: SM-N910F
CURRENT BINARY: Samsung Official
System Status: Custom
REACTIVATION LOCK: OFF
KNOX WARRANTY VOID: 0x1 (0)
I'm a little worried about the above highlighted lines, as I plan to take the Phone down to Samsung (Samsung Chat confirmed that the phone is still in Warranty).
As I have never rooted the phone, I'm quite surprised why the phone is showing System Status as Custom. Is this something to worry about, or should it be fine and considered still under warranty?
Any advice would be great, as I really need to get this phone working normal again.
Click to expand...
Click to collapse
Don't worry about the custom status.
Mine has started doing the same after about 14 months - freezing, restarting, switching off. I got the mmc read fail and custom status on a reboot as well (mines never seen root or a custom firmware) but if I manually boot it in to download mode , the status reads official. Try it on yours.
Apparently it's down to having a 64gb card installed when the phone fails ti boot but I can't varify that.

James.Miller said:
Don't worry about the custom status.
Mine has started doing the same after about 14 months - freezing, restarting, switching off. I got the mmc read fail and custom status on a reboot as well (mines never seen root or a custom firmware) but if I manually boot it in to download mode , the status reads official. Try it on yours.
Apparently it's down to having a 64gb card installed when the phone fails ti boot but I can't varify that.
Click to expand...
Click to collapse
You are so right.. I just checked it, and if I get into Bootloader manually I see that the SYSTEM STATUS is Official
Even the Knox Warranty line is slightly different
KNOX WARRANTY VOID: 0x1 (4)
So, I guess I'll take the trip down to Samsung Centre, and as the Engineer in the chat confirmed, they'll repair for FREE, under Warranty
Also curious if you've got your phone sorted?? and If so, what did you do?

dg170775 said:
You are so right.. I just checked it, and if I get into Bootloader manually I see that the SYSTEM STATUS is Official
Even the Knox Warranty line is slightly different
KNOX WARRANTY VOID: 0x1 (4)
So, I guess I'll take the trip down to Samsung Centre, and as the Engineer in the chat confirmed, they'll repair for FREE, under Warranty
Also curious if you've got your phone sorted?? and If so, what did you do?
Click to expand...
Click to collapse
Unfortunately no. My phone is useable but getting worse. Luckily Im only a few miles from my closest Samsung centre so I'm going to take it in on Saturday

Me too going on Saturday to the Wembley centre (my nearest)
My phone is totally unusable and only boots into the bootloader.
Sent from my Nexus 6P using Tapatalk

Ok so i thought i'd post an update for you guys:
I took my phone in to samsung in Milton Keynes on saturday. At first they were'nt sure about the phone as it had a third party battery (the original failed at 13 months) and german firmware on it (offical, was the only way to get 5.1.1 at the time..). But they eventually took it in. They were busy, which is fair enough it was a Saturday after all, but gave the german firmware as an excuse not to test it that day. The girl told me quite clearly that they would have to reflash the correct firmware before they can test it, again, fine, it was busy.
When they took the phone, they took the sim and my 64gb memory card.I questioned this at the time but i was told it was fine. so OK.
Fast forward a bit and yesterday i get the email to say its fixed. YEY. So i visited the samsung store today to pick it up, only the find the sim and card missing. The guy i dealt with said he'd seen the card when it was being repaired. it was a 64gb sandisk Sandisk ultra, so red and grey - quite distinctive. He then heads ouyt back to speak to somebody and comes back out saying "you're not going to like this, but they've been disposed of".
REALLY? YOU THREW THEM AWAY?
Then he proceeds to point to the small print stating they are not responsible for sims or cards left in the phones. FFS. I asked for them back when i handed them phone over and was told it was fine and at no point was i shown this small print OR advised that they cant take them. Anyway he himself was quite helpful so it was hard to be mad with him. He's given me the number of head office and their branch code, so im going to ring them and see what i can do.
So, at this point the phone is fixed. It needed a new mainboard as expected and a new charging board as well - didnt expect that but it could have been damaged when they took the screen off. but, i have no sim and no memory card. The card can wait - everything is backed up so ive lost nothing but the card itself but it is the principal, here. Having no sim i had to go visit the three store in the hopes that they could provide another for me. They could, luckily, and my sim was registered and up and running as soon as i inserted it and turned the phone on so at least i have a working phone. Great service from Three. Samsung/carphone warehouse...not so much.
so that's where i am. Oh and they didnt reflash the right firmware on the phone, apparently they arent even allowed to do that. So the girl i dealt with on saturday wasnt right about that either.

James.Miller said:
Ok so i thought i'd post an update for you guys:
I took my phone in to samsung in Milton Keynes on saturday. At first they were'nt sure about the phone as it had a third party battery (the original failed at 13 months) and german firmware on it (offical, was the only way to get 5.1.1 at the time..). But they eventually took it in. They were busy, which is fair enough it was a Saturday after all, but gave the german firmware as an excuse not to test it that day. The girl told me quite clearly that they would have to reflash the correct firmware before they can test it, again, fine, it was busy.
When they took the phone, they took the sim and my 64gb memory card.I questioned this at the time but i was told it was fine. so OK.
Fast forward a bit and yesterday i get the email to say its fixed. YEY. So i visited the samsung store today to pick it up, only the find the sim and card missing. The guy i dealt with said he'd seen the card when it was being repaired. it was a 64gb sandisk Sandisk ultra, so red and grey - quite distinctive. He then heads ouyt back to speak to somebody and comes back out saying "you're not going to like this, but they've been disposed of".
REALLY? YOU THREW THEM AWAY?
Then he proceeds to point to the small print stating they are not responsible for sims or cards left in the phones. FFS. I asked for them back when i handed them phone over and was told it was fine and at no point was i shown this small print OR advised that they cant take them. Anyway he himself was quite helpful so it was hard to be mad with him. He's given me the number of head office and their branch code, so im going to ring them and see what i can do.
So, at this point the phone is fixed. It needed a new mainboard as expected and a new charging board as well - didnt expect that but it could have been damaged when they took the screen off. but, i have no sim and no memory card. The card can wait - everything is backed up so ive lost nothing but the card itself but it is the principal, here. Having no sim i had to go visit the three store in the hopes that they could provide another for me. They could, luckily, and my sim was registered and up and running as soon as i inserted it and turned the phone on so at least i have a working phone. Great service from Three. Samsung/carphone warehouse...not so much.
so that's where i am. Oh and they didnt reflash the right firmware on the phone, apparently they arent even allowed to do that. So the girl i dealt with on saturday wasnt right about that either.
Click to expand...
Click to collapse
i doubt you needed a new charging usb board. Place sounds shady.
Sent from my SM-N910C using XDA-Developers mobile app

dg170775 said:
Hi All,
I have a SM-N910F that I have been using as my daily phone for about 18 months. I have NEVER ROOTED.
Recently I started encountering lags, freezes and restarts. In general, the phone became unusable.
I factory reset the phone and set the whole phone again from scratch, but in a few days I'm back where I was.
If I restart the phone, OR power down, the phone does not start. I have to pull the battery out, and re-insert for the phone to start again.
I even tried Firmware Recovery via KIES but that too failed, and after that I'm beginning to see a new variant to my problem.
Now, the phone mostly boots into Download Mode, where I see the below:
Could not do normal boot.
ddi : mmc_read failed
ODIN MODE (HIGH SPEED)
PRODUCT NAME: SM-N910F
CURRENT BINARY: Samsung Official
System Status: Custom
REACTIVATION LOCK: OFF
KNOX WARRANTY VOID: 0x1 (0)
I'm a little worried about the above highlighted lines, as I plan to take the Phone down to Samsung (Samsung Chat confirmed that the phone is still in Warranty).
As I have never rooted the phone, I'm quite surprised why the phone is showing System Status as Custom. Is this something to worry about, or should it be fine and considered still under warranty?
Any advice would be great, as I really need to get this phone working normal again.
Click to expand...
Click to collapse
Hi, was there a definite solution? I have the same problem.
I was wondering..
I came across this Forum group since I was looking for boot problems with my SM-N910T3
I hope flashing pit will resolve this..
I recently started to have some low level issue and was hoping it was partition/boot related and not hardware.
Randomly phone boot directly into Download mode with error;
ddi: mmc_read failed
Often I have to pull battery and hold down /power / home for 10 sec to boot up again.
Thanks

Ahh welcome to the club, my Note 4 got the same errors now after > 1 year. Suddenly and without me doing anything wrong.
And nothing helped to repair it, no flashing of FWs or PIT files or anything. So - I guess a new mainboard would be the only solution.
Problem is, I am also Knox 0x1 - yes, I rooted the phone, and now I am worried that I won't get it repaired by Samsung on warranty.
Which would be an utter shame, since nobody can be blaimed for the faulty mmcs except Sammy.

So I rooted my note 4 910g on MM using Twrp and SuperSU 2.74 Beta. The problem is that it has started behaving weird with random freezes and bootloops. Formatting and Reflashing PIT, ROM, etc causes it to get stuck at Android is upgrading and it goes on for like 10mins and then the cycle repeats. Is my eMMC dying? Do help if someone can help me revive my phone somehow.
I know i shouldnt be hoping for much of a solution but still if theres hope then do post a reply.

I started experiencing this issue since last week. Out of nowhere, my Note 4 started to lag and freeze. At first I thought maybe it was the battery too, so I got myself a brand new Anker Battery. And hey, nope it's not a battery issue. Then I reformatted my phone, and yes, it was still lagging and freezing.
Fast forward to this week, last night, I got the mmc_read failed message. Shoot me.
Now I've been using the Wake Lock app and it's set to Level 4 (Partial Wake Lock). It's been much better with this App running. Of course, my battery takes a hit. But at least the phone is usable, as long as I don't restart the Phone.
My gf's phone is exactly the same as mine, Note 4, and we're exactly on the same firmware version. She has no issue at all. We've switched batteries as well and her phone works fine with any battery.
I never rooted my phone, and I've been using only the original, official firmware pushed by T-mobile. My phone is running the latest firmware (EQB1) released last month. The problem didn't start right after my phone was updated. Only since last week.
Now, I've been scouring the Internet and many say this is a hardware issue, but some say too that this is probably caused by the firmware. Does anyone now know better if this is a hardware or software issue?
I was going to get myself another Note 4 but then if this is a firmware issue, it could happen too to a new Note 4. If this is a hardware issue, then a new Note 4 may not get this problem.
There's also a conspiracy theory saying that Samsung purposely did this so as to force all Note 4 users to upgrade their phones. If this is a firmware issue, can we file a class suit? Sigh.
UPDATE 1:
I just came back from the Samsung Experience Center. I also talked with Samsung, T-mobile over the Phone today.
So basically, from what the guy over at the Samsung Experience Center told me, a few months ago, many Note 4 Sprint users had this exact same issue. Basically the firmware update caused the phone to malfunction. In the end Samsung replaced all the affected phones. I went there, talked to him, and initially I wanted him to reflash my phone but he then told me that this issue was basically a faulty firmware. Reflashing wouldn't really help because the firmware itself is faulty. The firmware could have affected (damaged) the hardware. That this exact same issue has happened in the past with Sprint users.
I then called Samsung hotline up and talked with, fortunately, a friendly and helpful rep who was willing to document everything and escalate the issue on my behalf. She told me that she would call me back in a few days to update me on how the case is going.
At this point, I'll just have to wait and see.
UPDATE 2:
And apparently I just learned that Note 4 in Europe and Sprint here in the US just received a latest firmware update around 300-400mb in size.
"The firmware update description reveals that it brings better stability and performance as well as optimizations for improving battery efficiency. This Galaxy Note 4 update also comes with the March security patch that has 73 fixes for Android OS vulnerabilities and fixes for a dozen vulnerabilities that Samsung found in its own software."
Fingers-crossed, hopefully this update will soon come to T-mobile and other carriers and fix our issue.

T-mobile recently released a firmware update for Galaxy Note 4 (EQC1): https://support.t-mobile.com/docs/DOC-28899
I'm wondering if anyone has installed this and can confirm if this firmware update has fixed the mmc_read failed issue along with the constant lagging/freezing problem?

Note 4 wont turn on, "cannot boot normal" and "downlaoding target, dont turn off"

Note 4 wont turn on, "cannot boot normal" and "downlaoding target, dont turn off"
Its a Note 4 SM-N910F, Android 6.0.1, BB N910FXXU1DPE2, kernel 3.10.40-7733605 [email protected] #1
i feel I have tried everything... History:
Phone has been working fine for a year, upgraded to 6.0.1 no problems about 2 or 3 months ago. no new apps installed. Last week it started getting very laggy, keyboard strokes took for ever to register. I thought, ok, time to to a factory reset to blow out any old cobwebs. Did it via the menu. However the phone froze midway thought. I left it for an hour and then pulled out the battery. I popped it back in and it performed the reset without me having to press anything. Cool, thats good I thought.
Now I was going to change the battery, so I powered off as normal and put my other 2 week old original samsung battery in, and it would not power on. After a few reinsertions it powered back on. I though i have to do another reset. So I tried, and it would not reset. It just died. I cant restart the phone, it dies. If I shut it down normally. it wont turn on back on, I have to take out and reinsert the battery multiple times, holding down the powerbutton between to discharge. this can take up to 10 tries now. Sometimes it will go th the unable to bot in normal mode and "downloading , do not turn of target, but it will stay there for ever, more than an hour.
Every 15-20 tries it would turn on, let me get in via pin, only to start freezing up within a min, and then die again. Somewhere I read that a guy hada similar problem, and he used wakelock and that worked, on level 4. I managed to download that and used it, and hey presto, it works!
Now I had to power down the phone for a reason, and it took me about 30 min of battery and powerbuttonholding before it managed to boot up, and I was quick enough to start wakelock on level 4.
It wont boot in to safe mode, it wont boot in to recovery mode, it wont boot in to the factory reset mode. Its the same with either battery, and different cables.
Any ideas what i can do here, or what could be wrong? I havent gotten it wet or banged it.

I am having the same exact issue on a N910A. Phone was functioning correctly and in December it started getting really laggy. Performed various resets, purchased new battery. Still laggy. Up until two weeks ago the phone was slow but now it will not power on . The phone will not charge as well.

Mine did same, 6 months old, not rooted stock firmware. Locked up yesterday, couldn't do anything. Pulled battery and restarted. Samsung logo comes on screen goes black for android boot then it hangs with blue led flashing. Nothing I do gets it past that point. Tried safe boot but it doesn't fully launch with correct button combo and volume up. In the end I re-installed firmware using Keis. All went well, everything as per youtube tutorial. Except one thing, at end of download phone didn't re-start. Still can't get it to boot, any ideas?
Edit: Lock up didn't coincide with any new apps being loaded or updates of existing. Only change was a week ago which was an automatic update of the stock firmware (Lollipop)

armstrongracer said:
Mine did same, 6 months old, not rooted stock firmware. Locked up yesterday, couldn't do anything. Pulled battery and restarted. Samsung logo comes on screen goes black for android boot then it hangs with blue led flashing. Nothing I do gets it past that point. Tried safe boot but it doesn't fully launch with correct button combo and volume up. In the end I re-installed firmware using Keis. All went well, everything as per youtube tutorial. Except one thing, at end of download phone didn't re-start. Still can't get it to boot, any ideas?
Edit: Lock up didn't coincide with any new apps being loaded or updates of existing. Only change was a week ago which was an automatic update of the stock firmware (Lollipop)
Click to expand...
Click to collapse
are you still under warranty? i sent mine to a samsung center, the guy recognized the problem as the motherboard, said I wasnt the first. That was 3 weeks ago, they are STILL waiting for the parts. They say the Samsung factory are way behind with repair parts, etc etc. I am hoping it will go under warranty. Ill update when I know!

I've been having the same problem that started yesterday morning. I've tried a few different solutions but nothings worked, I get the feeling that my phone is dead and I'm not in warranty either. I'm going to approach Samsung but my guess is they will want more than the phone is worth to repair it. I've read about so many people having the same issues, its horrendous engineering on Samsungs part considering how much their phones cost to start with

neils0911 said:
I'm going to approach Samsung but my guess is they will want more than the phone is worth to repair it. I've read about so many people having the same issues, its horrendous engineering on Samsungs part considering how much their phones cost to start with
Click to expand...
Click to collapse
Your guess is probably correct and I totally agree with you. I seriously think manufacturers do not want their devices to be problem free for more than two years. Probably why they have stopped making phones with batteries that simply pop out.

bonfilet said:
Your guess is probably correct and I totally agree with you. I seriously think manufacturers do not want their devices to be problem free for more than two years. Probably why they have stopped making phones with batteries that simply pop out.
Click to expand...
Click to collapse
Definitely...surely it couldn't have been that hard to make a device with a battery that was still removable on the newer phones. It's frightening how many forum posts I've found with people having their phones just brick out of nowhere (and that's just the note 4). I've given up trying to fix mine, I've tried every method I could find and nothings worked. I can only assume that this problem is simply the motherboard of the phone not working anymore. I'm not even sure what phone to buy now but it certainly won't be a Samsung.

neils0911 said:
. I'm not even sure what phone to buy now but it certainly won't be a Samsung.
Click to expand...
Click to collapse
If you do not care about the camera thera are a lot of rather affordable options which can be tossed in the bin when they start malfunctioning and if their warranty has run out. If you care about the camera being as good as the Note 4's than the range of phones you can buy is quite limited.

mymigi said:
I am having the same exact issue on a N910A. Phone was functioning correctly and in December it started getting really laggy. Performed various resets, purchased new battery. Still laggy. Up until two weeks ago the phone was slow but now it will not power on . The phone will not charge as well.
Click to expand...
Click to collapse
If you are able to boot it into Download Mode then you should Download Stock Rom file for Galaxy Note 4 from Sammobile and Flash it through Odin..
Everything will be OK... ?

Unfortunately, SAMMOBILE does not have the SM-N910A firmware.

mymigi said:
Unfortunately, SAMMOBILE does not have the SM-N910A firmware.
Click to expand...
Click to collapse
You can find here firmware for N910A , 5.1.1 and 6.0.1 : https://simunlockremote.com/firmware-support/

bonfilet said:
If you do not care about the camera thera are a lot of rather affordable options which can be tossed in the bin when they start malfunctioning and if their warranty has run out. If you care about the camera being as good as the Note 4's than the range of phones you can buy is quite limited.
Click to expand...
Click to collapse
I think the camera on the note 4 is absolutley terrible. I might even go so far as to say the pictures are unusable. the applied noise reduction renders everything splotchy, colors are off and its not sharp at all. and Im not talking dark conditions here.
Anyway, my phone was repaired under warranty and is back to working as it should. It was indeed the motherboard, so if you have the same troubles I had, those are your best bets.

I don't think replacement via warranty will be available. I will attempt to power into download mode and verify if I can get it back up and running. If not, a good ole paperweight.

mymigi said:
Unfortunately, SAMMOBILE does not have the SM-N910A firmware.
Click to expand...
Click to collapse
You can download the Firmware from here ..
https://www.androidfilehost.com/?fid=24459283995298017
---------- Post added at 05:43 AM ---------- Previous post was at 05:41 AM ----------
mymigi said:
Unfortunately, SAMMOBILE does not have the SM-N910A firmware.
Click to expand...
Click to collapse
You can download the Firmware from here. .
https://www.androidfilehost.com/?fid=24459283995298017

Sounds like the problems I have: with my first N910F: started with lagging apps / freezing, then random reboots now and then, eventually giving error messages when booting. Finally, now it will only start after the battery has been out for at least 30 minutes, but hangs on error message. When pulling battery out and putting back in it, wont give a single sign of life. Since I was just out of warranty it has been lying around, and I bought a second hand N910F for replacement, sadly its starting to give the same errors too and is just out of warranty too (its currently still working, but with freezes / reboots / and already a event with boot error).
I read It could be memory chips or some power chip on the motherboard, appears to be a common problem. So.... Last month I bought a new motherboard on ebay (chinese delivery, 80€). Received it last week and put it back in; phone is back to life. (putting it in is a very simple task, with iFixit teardown / guide)
Anyway, I love the Note 4 for performance / size / looks, and have been Samsung fan for a while, but this recent breakdowns and information that it is fairly common, has diminished being a fan fairly quickly and I guess the Note 4 will be the last Samsung device for a while after this new motherboard breaks down as well

onno72 said:
Sounds like the problems I have: with my first N910F: started with lagging apps / freezing, then random reboots now and then, eventually giving error messages when booting. Finally, now it will only start after the battery has been out for at least 30 minutes, but hangs on error message. When pulling battery out and putting back in it, wont give a single sign of life. Since I was just out of warranty it has been lying around, and I bought a second hand N910F for replacement, sadly its starting to give the same errors too and is just out of warranty too (its currently still working, but with freezes / reboots / and already a event with boot error).
I read It could be memory chips or some power chip on the motherboard, appears to be a common problem. So.... Last month I bought a new motherboard on ebay (chinese delivery, 80€). Received it last week and put it back in; phone is back to life. (putting it in is a very simple task, with iFixit teardown / guide)
Anyway, I love the Note 4 for performance / size / looks, and have been Samsung fan for a while, but this recent breakdowns and information that it is fairly common, has diminished being a fan fairly quickly and I guess the Note 4 will be the last Samsung device for a while after this new motherboard breaks down as well
Click to expand...
Click to collapse
My phone is also random Rebooting
It also shuts down at 25% of battery remaining, Have you also faced similar issue?

Download the app "Wake Lock" and run the Partial Wake Lock option. Apparently the updated software impacts the CPU. For the restarting issue, put it in the freezer for a couple minutes. You may have to take the battery out once, but it has worked for me every time.

This looks very much like the issue reported here:
https://forum.xda-developers.com/no...-error-fix-t3434335/post72944466#post72944466
There are temporary fixes (wakelock), but ultimately this is a harware issue, and the fix is a new motherboard.
I think that underlying it is a problem with heat affecting the eMMC chip or its connection to the motherboard.
See also:
https://us.community.samsung.com/t5...ePhones/thread-id/12183/highlight/true/page/1
http://www.classlawdc.com/2017/04/25/investigation-samsung-galaxy-note-4-mmc_read-failed-defect/

Hey can u pls get me the stock firmware for n910gddu1dpb4

You might find this interesting. Since I couldn't get mine to power up at all, I called Samsung tech and they quoted me $75 to fix it and they would pay for shipping. I figured it was better then getting another phone off Swappa. 2-3 weeks later i get an email that they are repairing it under warranty at no cost to me. I got a refurbished phone since i know my IEMI number was different. they didn't explain why. Anyway, I got lucky i guess.

note 4 died. good battery.rooted.service did nothing since it was rooted

so, this phone died for me in 2017, and have been in a drawer since then. then i thought why not ask. so long story short if i remember correctly: bought it new. i rooted it since all the cool kids do that. then i did some update i think. and then in the winter of 2017 in beginning it just started behaving weirdly for me and then it turned off and all kinds of shenanigans. cant restart using different methods, sometimes it blinks, sometimes that bios menu comes up. blabla. so i tried to send it to the local repairshop that the seller used. but since i had it rooted they refused to fix it. so now i have a phone that costed 600 euro + 70 euro in service cost and it doesnt work. and then its been in a drawer since then.
i took it out, had it and the battery in a freezer for a while like some has said on internet didnt work.
anyway. does anyone here know any tips? if i want to flash the room can that be possible? or is this a lost cause? was this a common problem with note 4? i loved it and it crushed my heart when it stopped working. i still have a few months of pics etc on it from back then that ive never been able to get out. i attached it to the computer now and the computer makes a sound but nothing more.
any tips?

darknessviking said:
so, this phone died for me in 2017, and have been in a drawer since then. then i thought why not ask. so long story short if i remember correctly: bought it new. i rooted it since all the cool kids do that. then i did some update i think. and then in the winter of 2017 in beginning it just started behaving weirdly for me and then it turned off and all kinds of shenanigans. cant restart using different methods, sometimes it blinks, sometimes that bios menu comes up. blabla. so i tried to send it to the local repairshop that the seller used. but since i had it rooted they refused to fix it. so now i have a phone that costed 600 euro + 70 euro in service cost and it doesnt work. and then its been in a drawer since then.
i took it out, had it and the battery in a freezer for a while like some has said on internet didnt work.
anyway. does anyone here know any tips? if i want to flash the room can that be possible? or is this a lost cause? was this a common problem with note 4? i loved it and it crushed my heart when it stopped working. i still have a few months of pics etc on it from back then that ive never been able to get out. i attached it to the computer now and the computer makes a sound but nothing more.
any tips?
Click to expand...
Click to collapse
Sounds to me like either dead emmc or misconnection.
If it's just? misconnection there are tips (increasing the pressure by cardboard).
Can you access download mode?
Sometimes it shows there "dead emmc".
I somewhere read about a testing app.
Gotta search.
Where in Europe are you?
In the German Android-hilfe forum there is a member who fixes that.
Either exchanging the emmc or resoldering it.
If the chip is dead probably the data are lost.
afaik flashing the stock ROM deletes data.
It's a known problem, yes.

bmwdroid said:
Sounds to me like either dead emmc or misconnection.
If it's just? misconnection there are tips (increasing the pressure by cardboard).
Can you access download mode?
Sometimes it shows there "dead emmc".
I somewhere read about a testing app.
Gotta search.
Where in Europe are you?
In the German Android-hilfe forum there is a member who fixes that.
Either exchanging the emmc or resoldering it.
If the chip is dead probably the data are lost.
afaik flashing the stock ROM deletes data.
It's a known problem, yes.
Click to expand...
Click to collapse
Excellent feedback and assessment @bmwdroid . Thank you for sharing.
I only wish to add that there is a way to flash Samsung firmware while keeping user data. Of course, this method wouldn't be effective when it comes to emmc hardware failure so Im posting it for general information purposes only.
If you have downloaded the firmware for your Samsung Galaxy device you’ll find 2 CSC binaries with *.tar.md5*extension (namely CSC and Home_CSC ) inside along with BL, AP, and CP.*CSC*and*HOME_CSC*are necessary for different purposes, and you have to choose one or the other depending on your goal.
CSC –*If you flash the CSC file, it’ll perform a*factory reset*of your Galaxy device and wipe all data while installing a new firmware to bring your device to the same*state as it was when you purchased it. Go with CSC if you want a*clean installation.
HOME_CSC*–* On the other hand, if you want to*keep your Samsung phone’s data and settings*even flashing the stock firmware, you can select the HOME_CSC file.