yashsingh1/xdaforums huggingface dataset:
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] forbidinjustice:
I haven't thought about asking the T-Mo guys... they don't have a bunch of knowledge on the issues here (those n00bs don't even have root) but they're straight shooters with me at least.

In preparation for my new batteries arriving tomorrow, I made a backup of this DOK2 ROM that has been running quite smoothly. A bit of hang here and there but nothing major, no random restarts in the last 2 days. After the TWRP backup completed, I rebooted. It didn't boot. Halted at the animated Android screen... twice. I did a battery pull for a couple minutes, then booted. It got into Android... then about 60 seconds later, random restart. The random reboot often happens RIGHT after I restart the phone and it gets into Android. Did it on 6.0.1 too... and right after a ROM install. No clue how it relates, but always happens. So after the random reboot, now I'm back into Android and things seem normal.

Really hoping the batteries fix the issue... if not then I don't know what the next step will be. Maybe trying to get the re-partition to work.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] SteveRiley:
I had intended to call T-Mobile on Monday and try to cajole then into doing something for me since their buggy firmware broke my phone. But ran out of time before my next biz trip.

Hello from Seoul airport, en route to Mumbai. Last week, on my trip to Australia, American Airlines had wifi clear across the Pacific! Not so with Korean Air. Felt so odd to be disconnected from the world for 10 hours.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] forbidinjustice:
I really need to work where you work. Seriously.

If the new battery doesn't solve my issue, I'm also going to get on the phone with T-Mo and get them to do something for me. It's just another reason I love all these carriers going prepaid. It amps up the competition and forces them to provide good customer service since we have no contractual obligation to them.

My batteries didn't arrive yesterday, delayed shipment. Amazon switching shipping partners from UPS to USPS has to be the worst move they ever made.

Safe travels!
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] forbidinjustice:
Well, new batteries arrived and aside from excellent battery life, I can say that nothing is different. Still fighting to get my phone into Android. Then when I get into Android... I get a reboot soon after. It's always a success, and then I'm in. Same old song and dance. Also had one mmc_read failed since swapping batteries. Definitely not a power problem.

T-Mobile (on chat) says they can't do anything for me since I'm out of warranty, but to call their customer service to discuss the issue further. He only suggested technical things I've already done (wiping cache, booting safe mode)... He says it's a known issue with the S4 models... so he suggests I speak to Samsung. Sounds like I'm at the beginning stages of a runaround.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] risho:
Having the same issue with mmc read error with a ROM I have not touched except playstore updates since 05/01/16 this definitely sounds like a hardware issue even with my new battery that I suspected it is still causing this random lag/boot issues I am on LP rooted with xposed and TekHD ROM.

Any other options other than comepletely wiping the phone and starting fresh or is this some sort of heat/solder issue? I have noticed once it physically cools down from random booting and battery pulls I get a few hours of fast performance.:confused::confused:
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] forbidinjustice:
I, as well as a couple others on this thread, have wiped the phone clean a dozen times and also switched from LP to MM and back again. LP has been more stable, but previously on MM, especially when the phone was cold (in a deep sleep), it would have a difficult time waking up, and that's when I'd get the random hangs then restarts. I'm back on 5.1.1 DOK2 and it's much better but the issue still exists at times. Deep sleep seems to be fine on DOK2.

I'm still thinking it's hardware-related because I've gone thru every bit of software troubleshooting aside from re-partitioning the internal storage.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] risho:
Without sounding like a tinfoil hat guy, possible Samsung built in some sort of counter to cause random memory issues? I'm thinking along the lines how Brother laser printers need drum/toner replacements and as soon as you do the youtube access code it allows printing for another 1000pages on the same ink toner.

Only reason I'm suspicious I have friend of mine who bought his Note 4 near the original release date as I did having the same issues as all of us. Big difference being his phone is a rom virgin to mods it's never even been rooted and he is currently on the last tmobile LP update with a new battery thinking it would solve the issue even with a in phone factory reset.

Any theories out there? I have tried sticking my phone in front of the ac when it starts to lag with surprise results where it works as it should for almost an hour before the lag returns, possible thermal/solder issue?
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] forbidinjustice:
The only doubt I have about a 'counter' as you mentioned... is that I saw people with mmc_read errors posting about it in late 2014, which was only a month or two after the Note 4 came out. That means it happened to them VERY quickly... and to the rest of us, when the MM firmware was released (it seems.) So, bad solder? That theory has credibility in this case, for sure.

Deep sleep is what has given us some problems... with me, only in MM. In LP, deep sleep works fine. I mention this because it had problems 'waking up' which means the phone wasn't hot at the time. The hang/freeze wasn't related to thermal. However, is mmc_read related to thermal/solder? Not sure. I'm also not sure whether mmc_read is related to the lag/hangs/freezes we were having. Lots of variables here.

I don't want to get ahead of myself here, but... T-Mo was trying briefly to troubleshoot it with me yesterday. They told me to remove the extSD card, restart and clear the cache. I did. My phone has been a lot smoother today (5.1.1, DOK2, OvrDriVE's ROM.) I still need to take a couple more days to test/confirm this but if it stays smooth, maybe the extSD has been causing some issues and I need to format it. Also if it stays smooth, I'll try it without extSD on MM next.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] risho:
I've never upgraded to MM, only LP earlier this year and last change to my ROM was in the 1st of May I should try the SD card removed route with clearing cache. I'll do it today and I'll update over the weekend
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] TheROMGuy:
Has anyone tried to raise the voltage of the lower core speeds? After a while the new battery started acting weird too. But maybe if we raise the voltage for the lower cores it'll actually dump enough into to get it running smooth?

edit: Try updating the SU Binary. I updated it and the. Rebooted and it actually rebooted normally and now I can actually hit deep sleep. Also did the voltage change after the SU binary updated.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] risho:
The partial wakelock app has kept my phone working just as it should with LP 5.1.1 TEKHD rom hmmm this rom users SuperSU so you're saying by doing the update, which I noticed there is one it should take care of this issue. I'll uninstall the wakelock app and try this method.

---------- Post added at 01:48 PM ---------- Previous post was at 01:23 PM ----------

Just tried to update my SuperSU app and when I click on update thru TWRP it will say this app has stopped working and not boot into recovery to make the update. I'll have to see if they made a .zip file I can flash in recovery. Any tips when SU crashes when trying to update?
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] TheROMGuy:
Click normal, not twrp.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] risho:
Thanks it helps when you read that option it is more for HTC devices it states smh noob mistake on my part. Let's see if I can leave the wakelock app off and finally get to the root of this random freezing/lag problem.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] Kevindroid:
Its possible. My phone is cold(not even a bit warm) but in this app it showed that my cpu is overheated.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] risho:
---------- Post added at 04:09 PM ---------- Previous post was at 04:00 PM ----------

[/COLOR]No luck with my hail mary pass with updating SuperSU 2.78 and shutting off the wakelock it started lagging froze up on deep sleep then had to do a battery pull. Now with the partial wakelock on it runs as it should even when AnTuTu benchmark pushing cpu/graphics no issues even a little warm near cam/cpu back area of phone....at a lost like everyone on here even without ever loading any MM roms. Might have to suck it up and lose a few hours of my 3 day weekend to do a full partition wipe and install.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] forbidinjustice:
Wow, glad to see the thread getting bumped is causing it to gain attention. I appreciate all the information. Your symptoms seem to mirror mine almost completely. I've been running on 5.1.1 DOK2 for 3 solid days now with virtually no issues. I got my new Anker batteries Wednesday. Charged up my phone, pulled the cable at 100%. 30 hours later, I was around 50%. Again, performance has been solid. Right when the phone hit about 60%, it randomly rebooted itself. No warning, nothing. Phone was just sitting on the desk with screen off. Boot was successful, nothing else since.

I decided to do a normal Restart just to see what happens. It hung on the first screen you see, probably for about 60 seconds. Short vibration, reboot... then it rebooted normally. It's pretty strange. My extSD card is still out, which may have been making the difference, not sure. I'll leave it out thru tomorrow and if performance is still good, I'll put it back in and see if things get worse again. Then I'll know.

All in all, a ton of random symptoms under different conditions with no clear cause. Thanks, Samsung.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] duh-rel:
Upon rereading your posts (I've already read the thread once through), I think I ran into every problem you did aside from your experiences with LL/DOK2. I had flashing/write errors, plenty of FAILs in Odin with ROMs not taking, seeing the "SECURE CHECK FAIL : PIT" message about a half dozen times, random reboots at all stages (except during Odin usage and the display showing the Android robot performing system upgrades right after factory restoring), countless battery pulls (maybe 40 times by now)...so many frustrating hours spent trying to fruitlessly resuscitate the phone.

As I recall back to when the issues first developed a month ago, it corresponded to a series of routine app updates via the Play Store. I noticed in particular the Google app had updated and remember wondering if it wasn't as compatible with FireKat anymore. I also noticed my torrent app (Flud) was freezing ever single time I opened it.

I skipped upgrading to Lollipop and jumped into Marshmallow where the issues became worse. Fed up with the process, I didn't give the proposed DOK2 solution a try and was going to sell my Note 4 on Craigslist for parts. Glad to hear you've had some success with that 'fix' and hopefully it sticks.

Sounds like your Anker batteries are performing well. I'm in need of replacements and have had poor experiences with a knock off Samsung from eBay and TrendON batts from Amazon. Two of them gave me inaccurate readings. For instance the phone says I'm at 20% then all the sudden it shuts down and upon boot up I'm at less than 5%.

Another problem I've had with this Note is poor GPS lock on. I had to resort to pressing down the top right corner for faster and more accurate locks. I doubt this contributes to the problems discussed in this thread.

In response to the tinfoil hat suspicion of a built-in counter towards hardware failure, I wouldn't buy it. If anything, just a lack of quality control or poor design. Why deliberately spend money to design a counter and risk class action lawsuits upon discovery of such when you can source lesser quality parts to create a similar effect?

This is my third Samsung phone, and while they perform magnificently when new, hardware failures show up overtime. My previous Note 4 had the defective camera and my first Samsung phone (Galaxy S2) suffered motherboard issues. I thought about the Note 7, but their recall for exploding batteries and my previous experiences lead me to believe their quality isn't all that great.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] SteveRiley:
I updated the SU binary. No luck -- my phone still won't wake from sleep. Need to continue keeping a wakelock.

With which app are you adjusting voltages? Neither Trickster Mod nor FauxClock show the ability to make voltage adjustments. I'm on the stock 6.0.1 PE3 kernel.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] TheROMGuy:
You need a custom kernel and kernel auditor. I've taken out my sdcard and actually undervolted my lower cores and I've only had one or two sluggish moments and it was in deep sleep all night almost 15 hours, I also set the minimum core speed to 422 and CPU boost to jump up to 652. And like I said I've only had a few sluggish moments when i didn't have enough ram.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] SteveRiley:
Ah, so it's a function of whether the kernel exposes voltage options -- I figured as much. Which custom kernel are you using?
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] TheROMGuy:
I made some edits to my post take a look at them, they might help you. Also I'm on AICP so whatever kernel is on there. It's MM. I'm about to get a OnePlus 2 so I can just experiment with a fix to get this working. I've made minor progress in getting it more stable.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] SteveRiley:
I installed the latest Beastmode kernel. When I remove the wakelock app, I still experience the issue where the device won't wake from sleep. I haven't played with voltages yet -- guess I'm confused how increasing the minimum core speed to 422 would affect deep sleep? Isn't deep sleep supposed to be even lower than the minimum core voltage when the CPU is awake?

---------- Post added at 01:00 PM ---------- Previous post was at 12:57 PM ----------

Ah wait...you didn't say anything about voltages, just that you raised your minimum speed to 422 MHz. My phone behaves just fine with the minimum at 300. It's only deep sleep that causes issues.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] TheROMGuy:
I did change my voltages. I undervolted the lower core speeds so the CPU doesn't require as much power to get the processor running again. I'm thinking it's a voltage regulation issue. So I dropped them down approx. 10mV only like the first 5 clock speeds.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] SteveRiley:
Right! I read too quickly at first, lol.

So I've duplicated your configuration here and turned off the wakelock app. The phone does sleep, and pressing the power button wakes it up. But there's some fairly significant lag at first. And the phone has twice so far rebooted while sleeping.

Perhaps I'll try some other adjustments to see if I can arrive at a combination that's stable.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] forbidinjustice:
So I've been just fine on DOK2 lately, running along smooth, barely any lag at all for 3-4 days straight. Then I was reading thru some of these posts and decided that I should update my SuperSU/binary if it needs it. I was on 2.52 and now 2.78 is out. I updated the app, updated the binary, rebooted. All of a sudden I'm getting lag, freezes, the phone won't boot properly, having to do battery pulls... an absolute mess. The binary is the only thing I've changed. I believe in cause and effect so I'm pretty sure that has affected it negatively. Restored the DOK2 ROM now and I'm back on 2.52. I'll see if it goes back to smooth.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] SteveRiley:
If you feel up to it, would you mind running an experiment? Update SuperSU and binary again, then run the wakelock app. Do you still get lags and freezes?

The reason I ask is that we just might be narrowing down to a confluence of issues related to SuperSU and CPU sleep. Yours would be a great test, especially since Marshmallow would be totally out of the picture.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] forbidinjustice:
I'll do that. Going to hang out on this DOK2 restore for a bit to make sure it's back smooth, then I'll upgrade SuperSU and try it with Wake Lock app to see what happens then.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] forbidinjustice:
[MENTION=270939]SteveRiley[/MENTION] Haven't done that test yet. Right when I restored the DOK2 ROM, I started having issues. Besides the one mmc_read, my phone is having issues with deep sleep again. Running the Wake Lock app now and everything has been fine. I just don't understand it. Seems totally hit-or-miss, since the last backup of this ROM was working flawlessly (before the SuperSU binary update.) There's no rhyme or reason to any of these symptoms.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] SteveRiley:
Wow, so weird. Cosmic rays, maybe? The only thing I can think of that would cause the same install to behave differently in two cases is intermittent hardware failure.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] rymanh:
This is happening to me, and im quite upset about it.

I am running the latest MM uodate on the Canadian variant. But this started before i updated my phone. Its just gotten worse.

Right now i am stock unrooted after reinstalling the firmware with Odin to see if that helped. It didn't!

I have noticed thst just before it freezes and reboots, my phone gets quite hot. Its not like im using any apps that would normally caise that. This issur hapoens no matter what im doing.. I could be just sending a text it making a call and it randomly reboots.

The problem seems to go away after the phone cools off.

I wouldn't mind trying an application or a mod that keeps my cpu cool in order to see if thst works. Im willing to root my phone again if i need to..

Does anyone have any suggestions?
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] rymanh:
Well to say im salty about the issues with my phone is an understatement. There diesnt seem to be a way to fix it. Im certain that this will be the last samsung phone i ever buy. Theyre note 7 explodes and my note 4 gets so hit that sometimes i think it will too. This rebooting issue made my phone a piece of garbage f*** samsung
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] duh-rel:
Have you tried downgrading to DOK2? Seems like some people have had success with getting their phone working, albeit not to what they felt was the performance level prior to the issues.

I got my phone back from a Samsung service center and was told it was Beyond Economical Repair (BER). Needless to say, this experience has been very disappointing. The customer service was lacking and the products, although great on first use, show signs of poor quality/build with age.

My experience with Samsung phones (an S2 and two Note 4s) have all been plagued with hardware issues. Failing motherboards, faulty cameras, and poor GPS locks. I won't be considering Samsung phones in the near future.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] rymanh:
Downgrading may be my last hope, i just wasn't sure that doing a firmware rollback was a good idea . However i don't feel like the mm update brought anything super useful. The new icons are cool. But nothing a launcher and an icon pack can't do.

I've had an s2, s4,and note 4 and yes they all had crappy gps lock issues.

I used to absolutely love this phone though. I hope i can go back to doing that haha

But I'm done with Samsung

Ill let everyone here know if it worked
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] rymanh:
This didnt work for me at all. The problem still persists and i don't believe that the rebooting has anything to do with firmware.

This is something i really ally didnt need and i wont forget it
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] forbidinjustice:
My issues still seem to be hit-or-miss. For a while everything was fine... I took off the partial wakelock and things were fine for a few deep sleeps, then started hanging again. I'm pretty sure it's hardware-related... just so inconsistent that it's impossible to pinpoint. I've been meaning to call Samsung, just haven't gotten around to it. Seems like that'll be a waste though too. Just strange how some people were getting similar issues a couple months after the Note 4 released... but others took a couple years before it started happening. It's almost completely random.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] monkeyass408:
im pissed. my marshmallow is acting up like all the comments on this forum. I was fast and smooth for months then random stalling and lag and reboots. Tried to odin MM and would finish but would always get stuck on the green android system update after odin. Booted and rooted fine but after some time it would act up again. This only happened on marshmallow. Im in the process of odin back to dok2. I hope it resolves my issues or this is definitely some hardware issue.
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] rymanh:
Unfortunately it may be a coincidence that it happened after the update.

If this is a hardware issue. Then there is little that any software update or downgrade can do to fix it

First time it happened to me was on LP. That's what made me finally decide to update it. But the problem got worse, and seems to continue to get worse.

some people seem to solve their issue through various methods in this thread, some do not. There is a chance that there could be multiple issues that are causing similar rebooting and freezing problems and that's why some people are able to solve it. because it may nit be due to the motherboard in every situation

I hope you're one of the lucky ones. Good luck

Weirdly enough it has never once froze for me when in download mode though im not sure what that means. Probably nothing
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] monkeyass408:
i have my doubts. i even notice the lag in twrp recovery... It stalls for a while then continues. Damn i wanted to hang on to this phone longer too. 1.5 years the battery degradation on these things. Batteries dies at 15-20 left. Was easy to replace. I really dont want to replace the mainboard for 100+ either. And i still have three payments for this phone left.. another 100 bucks. I dont feel good if i sell it to someone else either... makes you wonder why they had he t3 version of the note 4... must be a hardware revision of some sort. im wondering if anyone with the t3 version have any issues?

Edit: its official. It still acts up with lollipop. These stutters are annoying. I guess its nearing end of life. My gf phone had this happen to her on lollipop. First the micro stutters then reboots then her phone couldnt go through odin and had errors. Then it refused to even power on. At least for her t-mobile sent her a used on free as one time courtesy. I doubt that they will extend that courtesy again...
[T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting] monkeyass408:
i tried pulling my own pit but it didnt work out. i got a secure check error in odin.

How did you pull the pit? or where did you get it?

im on sm - 910t t-mobile note 4

---------- Post added at 11:54 PM ---------- Previous post was at 11:54 PM ----------

i tried pulling my own pit but it didnt work out. i got a secure check error in odin.

How did you pull the pit? or where did you get it?

im on sm - 910t t-mobile note 4