Galaxy Note 4 recently started having an unusual problem - Galaxy Note 4 Q&A, Help & Troubleshooting

Hi everyone, I'm new here in xda. I hope you could help me with a very strange problem with my Note 4: I bought it in February and I was surprised how it worked perfectly, even after some months of usage. The problem started about a month ago: when using it normally, it suddenly started becoming slower and slower, it was lagging very bad, and after few seconds it was completely frozen. I left it on a blank screen for about 15 seconds, then it rebooted itself and everything looked normal... but the signal status icon in the status bar disappeared and I got the "no sim card" error. I rebooted my phone once again and then everything worked well. The exact same thing happened 4 more times in the last month, and I solved the problem in the same way everytime. There were 2 updates since the first time this happened, they noticeably improved the performance of my phone, but the problem is still there and it happened one more time few minutes ago. Any solutions for this? It is very irritating, expecially because it happened in situations I really needed my phone to work. Thank you.

Black Shade said:
Hi everyone, I'm new here in xda. I hope you could help me with a very strange problem with my Note 4: I bought it in February and I was surprised how it worked perfectly, even after some months of usage. The problem started about a month ago: when using it normally, it suddenly started becoming slower and slower, it was lagging very bad, and after few seconds it was completely frozen. I left it on a blank screen for about 15 seconds, then it rebooted itself and everything looked normal... but the signal status icon in the status bar disappeared and I got the "no sim card" error. I rebooted my phone once again and then everything worked well. The exact same thing happened 4 more times in the last month, and I solved the problem in the same way everytime. There were 2 updates since the first time this happened, they noticeably improved the performance of my phone, but the problem is still there and it happened one more time few minutes ago. Any solutions for this? It is very irritating, expecially because it happened in situations I really needed my phone to work. Thank you.
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Hello,
I have reported this thread to move to right Q & A section in order to get help more quickly.

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XDAIIi frequently restarting itself..?

Hi there, im wondering if anyone has had a similar problem with their xdaIIi. Ive had it about 3 months, i updated to the latest o2 firmware etc a few weeks back and other than removing the o2 active ui, everything is standard.
Software wise, i havnt installed anything new in the past month or so and can see no reason for the problem, what happens is this:
- when using the phone, i.e starting to write a message, run a game, anything.. it restarts within between 1-2 minutes of use.
- when left alone, i.e just sitting in cradle or on the desk, it restarts every 10-20 minutes on its own.
I have no idea why its doing this, have tried removing the sd card but the problem remains and i dont know what to do short of wiping it and starting again.. any help much apreciated, thanks.

PRoblem with Touch HD screen

Hi i been flashing my phone with different roms every month and over the last 2 months im having problems with my screen not switching on even thought the phone is actually on cause i get calls and answer them but the screen doesnt come on it works sometimes when i use it regularly during the day but if i leave it overnight i cant switch the screen on in the morning.
I have done loads of Hard Resets and tried different ROMS but after a while they all do the same.
ANyone else with the same problem??
loksproductions said:
Hi i been flashing my phone with different roms every month and over the last 2 months im having problems with my screen not switching on even thought the phone is actually on cause i get calls and answer them but the screen doesnt come on it works sometimes when i use it regularly during the day but if i leave it overnight i cant switch the screen on in the morning.
I have done loads of Hard Resets and tried different ROMS but after a while they all do the same.
ANyone else with the same problem??
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I had this issue and thankfully resolved it by removing battery and leaving phone overnight. I then inserted battery and phone has worked perfectly ever since. However others haven't been so lucky. Read this thread. Other threads exist if you type 'black screen' into search

[Q] Random Reboots

Guys i bought my Galaxy S5 on 3rd May. And during that 48 hours almost my phone has been rebooted twice automatically. One time i was browsing through chrome and every thing hangs ups resulting in ramdom reboot. Second time i finnished a call and was removing ear phones when phones was rebooted. After that when i checked phone status from about phone it was showing that phone was up to about 20 hours. I want to know anyone else facing that problem or its just me. BTW i am using exynos version.

frustrating problem where the phone is lagging/restarting with sim card inserted.

Let me start off by saying that this issue started back at the beginning of Dec 2015. I've had the phone since winter 2014, and for a year, it was the most amazing phone ever. However, one day as mentioned beginning in dec 2015, the phone began running extremely slow and was restarting frequently. I assumed it was a just a OS issue, and so I did a system factory reset. However, the problem persisted even after a reset and cache clearing. So I called up Samsung, and then told me to send in the phone to get looked at. Since then...I have sent in the phone 4 times to get looked and each time, Samsung has said there is no issue pretty much. I've tried phone with different new batteries, and the same problem still occurs.
The oddest thing that I've noticed with this issue is the phone runs smoothly and flawlessly, when there is no SIM card inserted. But, as soon as I insert my At&T sim card into the phone, all the lagging/restarting issues occur. It's been a frustrating 3 months trying to deal with issue, and i'm at the point where i'm throwing in the towel and calling it quits on trying to fix this phone that costed me so much money.
At&t reps were clueless when I brought this issue to them today, and told me to call samsung....even though samsung says at this point it's a network provider issue and that I bring it to At&t. I've googled this issue and couldn't find anything on this. Posting on here is my last ditch effort, and if anyone knows anything that can, I would very much appreciate it. If not, i'll prob buy a new phone out of pocket.
having the same issue since 2 days after sim change
Hi, I recently switched my carrier and inserted a new sim. Phone worked fine initially but after 1 day it has started working extremely slow. It sometimes does not wake up from sleep even when i press the home button repeatedly. Sometimes it hangs and then gets into bootloop. I factory reset my phone yesterday and the issue resolved initially but when i installed and restored my watsapp messages, the issues started all over again. Now i am thinking of flashing my phone with a different ROM and see if it helps.
doctor geek said:
Hi, I recently switched my carrier and inserted a new sim. Phone worked fine initially but after 1 day it has started working extremely slow. It sometimes does not wake up from sleep even when i press the home button repeatedly. Sometimes it hangs and then gets into bootloop. I factory reset my phone yesterday and the issue resolved initially but when i installed and restored my watsapp messages, the issues started all over again. Now i am thinking of flashing my phone with a different ROM and see if it helps.
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thanks dr. geek, keep me posted on how that goes.
Problem persisting even after flashing a new rom
I flashed a 5.1.1 australian ROM downloaded via sammobile. but the phone started hanging again this morning. I am beginning to wonder if its an hardware problem.
I have the same problem ...
Have had my Note 4 since November 2014. And it havebeen working flawless, running rooted and everything Until yesterday when i was just casually using my phone and it started to lag and restart, no difference whatever rom. So i tried for a whole day to get it into official firmware with alot of error messages in the progress about the internal memory etc, i ended up repartitioning, and modifying my PIT-file until i finally got it working. And the same issues did still exist. Now the thing that seemed to work for me was to change battery, now it seems to run again without lagging, or anything. Tho it wont restart properly without restarting twice by itself..
filosofenkalle said:
I have the same problem ...
Have had my Note 4 since November 2014. And it havebeen working flawless, running rooted and everything Until yesterday when i was just casually using my phone and it started to lag and restart, no difference whatever rom. So i tried for a whole day to get it into official firmware with alot of error messages in the progress about the internal memory etc, i ended up repartitioning, and modifying my PIT-file until i finally got it working. And the same issues did still exist. Now the thing that seemed to work for me was to change battery, now it seems to run again without lagging, or anything. Tho it wont restart properly without restarting twice by itself..
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Hi, i doubt it to be a battery issue. Anyways, i would really appreciate if u post an update again after 1-2 days. i just want to confirm it before spending money on a new battery.
doctor geek said:
Hi, i doubt it to be a battery issue. Anyways, i would really appreciate if u post an update again after 1-2 days. i just want to confirm it before spending money on a new battery.
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Hey yeah, well. you're right. I only got up to 3 hour use before same problems started to occur again. I have officially given up now tho, it must be a hardware failure. Im going to send it in.
its the EMMC chip bug
filosofenkalle said:
Hey yeah, well. you're right. I only got up to 3 hour use before same problems started to occur again. I have officially given up now tho, it must be a hardware failure. Im going to send it in.
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I am also getting a black screen sometimes before booting which says "ddi EMMC error". I think my nand chip is corrupted. Is any one of u getting the similar error?? Also flashing my phone with a PIT file can solve the issue ??
doctor geek said:
I am also getting a black screen sometimes before booting which says "ddi EMMC error". I think my nand chip is corrupted. Is any one of u getting the similar error?? Also flashing my phone with a PIT file can solve the issue ??
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Im getting the same, i guess you could try it. But from what ive read it seems like the only fix is for samsung to exchange your phone, or change motherboard.
Good luck with samsung fixing it. I sent it in 4 times and each they responded "no problem found". I gave up and bought a moto e.
Flashed again with PIT+Re-partition
nguyen3706 said:
Good luck with samsung fixing it. I sent it in 4 times and each they responded "no problem found". I gave up and bought a moto e.
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Yesterday i flashed my phone again, this time with a PIT file and repartitioning checked. Eveything went fine but the phone went into recovery booting bootoop initially but started on its own after a few bootloops. It worked fine for sometime, but when i entered my samsung account and it started to restore my msgs, call logs and apps, after 1 hour or so it started to freeze all over again. I am starting to think that some app could be a reason too. Now i will flash again and keep using it without restoring my old phone and installing only a few essential apps and see what happens
---------- Post added at 03:28 AM ---------- Previous post was at 03:26 AM ----------
I also installed an app from the play store EMMC brickbug check but it says that my NAND chip is sane (fine i guess)
Same happens to to my note 4 snapdragon phe.
Any updates ? Did anyone got it back fixed from Samsung?
Good luck
My T-mobile Note 4 started experiencing this same issue last week. Is this a coincidence or something more? For everyone with the same issue, has your phone been slightly warmer at the top?
I purchased a new Anker battery to see if that will resolve the issue and will test it when it comes. But I think the emmc is starting to go bad? It seems to work fine without a SIM card inserted also.
I just received from samsung that they need to replace the motherboard, and of course the warranty isnt covering up since i rooted it. And they're going to want 540 USD from me to do that. Sigh, last phone i bought from samsung for sure.

Samsung S8+ keeps freezing then restarting [ possible reason ]

Hi all I have a Samsung s8+ on Vodafone UK and have got the same problem as many people out here device freezes and then reboots out of nowhere after reading endless comments on it and not getting anywhere I noticed that my phone freezes and reboots 9 out of 10 times when I'm outside and it's cold now I was wondering if anyone else has found that when there outside and have their device out it does this? Quick example I walked to the gym today which is a 10 min walk and on the way there it did it once then on my way back it did it twice now whilst being at the gym it didn't do it and being back home now for about 3 hours it hasn't happened once. Imo it's the hardware but I want to know if anyone else experienced it in this way or maybe this will trigger a lightbulb moment and we get a solution.
Thanks guys.
Quick edit: I have tried the hard reset, the factory reset, smart switch, got the latest update and device is 3 months old
Hmdutch said:
Hi all I have a Samsung s8+ on Vodafone UK and have got the same problem as many people out here device freezes and then reboots out of nowhere after reading endless comments on it and not getting anywhere I noticed that my phone freezes and reboots 9 out of 10 times when I'm outside and it's cold now I was wondering if anyone else has found that when there outside and have their device out it does this? Quick example I walked to the gym today which is a 10 min walk and on the way there it did it once then on my way back it did it twice now whilst being at the gym it didn't do it and being back home now for about 3 hours it hasn't happened once. Imo it's the hardware but I want to know if anyone else experienced it in this way or maybe this will trigger a lightbulb moment and we get a solution.
Thanks guys.
Quick edit: I have tried the hard reset, the factory reset, smart switch, got the latest update and device is 3 months old
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Why do you think it's the hardware?
Flash a new stock rom using Odin. Get the latest version for your device and carrier.
partcyborg said:
Why do you think it's the hardware?
Flash a new stock rom using Odin. Get the latest version for your device and carrier.
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Because it only seems to happen outside I went from last nights post to this morning without reboot but as soon as I stepped outside within 10 min it happened then I tried replying to this post and it happened again so yeah done this reply twice. I'm currently inside and it hasn't happened. I don't know if it's the battery is being sensitive to temperature changes after the exploding ones but I don't seem to have this problem indoors I was outside for roughly 25 min and it rebooted twice consistent with other times now I have read a comment of a guy describing the same problem and he had his motherboard replaced and the phone seemed to be working fine after that but there has not been an update after that so I'm not sure if that was a long term solution.

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