Samsung Galaxy Note 4 Problems, Errors, Glitches and Solutions


To our valued readers who own a Samsung Galaxy Note 4, welcome to the first part of our troubleshooter series. Just like Note 2 and Note 3, we will be supporting this device and there will be weekly support articles that will be published on our site. So, make sure to visit from time to time for updates especially if you have issues with your device.

The problems I cited in this post were sent to us by our readers. These problems are so common that you may encounter them any time soon. So far, we haven’t received emails relating to some serious firmware or hardware issues. The problems below can easily be fixed and either feature- or service-related only.

If you need help troubleshooting issues with your device, feel free to email us at [email protected] and provide as much details as possible. We welcome long email messages that provide details. We also welcome shorter ones with screenshots or pictures that provide relevant information about the problem. And for those who want to be helped through social networking sites, feel free to post on our Facebook wall or Google+ page.

Click on a link to jump to a specific problem:

  1. Galaxy Note 4 Randomly Reboots Without Apparent Reason
  2. Galaxy Note 4 Keeps Freezing and Lagging
  3. Galaxy Note 4 Became Very Slow
  4. Galaxy Note 4 WiFi Switch Greyed Out
  5. Galaxy Note 4 Stuck On Logo After An Update
  6. Laptop Can’t Recognize Galaxy Note 4
  7. Galaxy Note 4 Volume Key Acting Up
  8. Galaxy Note 4 Can’t Scan For Network
  9. Samsung Galaxy Note 4 Proxy Problem
  10. Galaxy Note 4 No SIM Card Error
  11. Galaxy Note 4 Can’t Connect Via Mobile Data

Galaxy Note 4 Randomly Reboots Without Apparent Reason

Problem: Hi Guys. I bought a Samsung Galaxy Note 4 in November and it’s been working fine until about a week ago. I am worried about it because it just reboots itself randomly and I don’t know what caused it. Sometimes it reboots twice a day but the most annoying incident was when I was on a call and the phone restarted; it happened twice already. The reboots are all random that I haven’t seen any pattern. If you know how to fix this problem, please let me know ASAP. Thanks in advance and continue what you guys are doing! Regards, Jerry.

Troubleshooting: Hi Jerry! One thing that makes “random” issues complicated is that they don’t have patterns, so you don’t know what caused them. But based on reports from other Note 4 owners who have encountered this problem, your case maybe caused by a failing microSD card. There’s no guarantee on that, though, but that’s the first thing I want you to look into. Please follow the simple troubleshooting I outlined for you:

  1. Remove microSD card. I understand you may have important data, documents or even apps that run from it but based on your description, the reboots happen everyday. That said, spend a day with your phone without its microSD card and see if it still reboots. If it doesn’t, then it’s the microSD card that’s causing it.
  2. Backup data from microSD card. The card may be failing but it doesn’t mean it’s already damaged. Copy or backup all data that are saved in the card by inserting it to a reader then to a laptop or computer.
  3. Reformat microSD card. While you can reformat the microSD card using your computer, it would be better if you let the phone do it.
    1. From the Home screen, tap Apps.
    2. Launch the Settings app.
    3. Touch Storage.
    4. Touch Format SD card and follow on-screen instructions.
  4. Perform master reset. You’ll only do this if the phone still rebooted randomly even without the microSD card. But, of course, before the reset, backup all your important data, then follow these steps:
    1. Turn off the Galaxy Note 4 completely.
    2. Press and hold the Volume Up and the Home keys together, then press and hold the Power key.
    3. When the Note 4 vibrates, release both the Home and Power keys but continue holding the Volume Up key.
    4. When the Android System Recovery shows on the screen, release the Vol Up key.
    5. Using the Volume Down key, highlight ‘wipe data / factory reset’ and press the Power key to select it.
    6. Now highlight ‘Yes — delete all user data’ using the Vol Down key and press the Power key to begin the reset.
    7. When the master reset is complete, highlight ‘Reboot system now’ and hit the Power key.
    8. The Note 4 will restart but it will be longer than usual. When it reaches the Home screen, then begin your setup.

Galaxy Note 4 Keeps Freezing and Lagging

Problem: Hi droid guy. My new Galaxy Note 4 started to lag last week but I though it was just because of the game I installed, so I uninstalled it. I thought the problem was fixed after that but I found out the phone still lags randomly. It once lagged when I was using Facebook and also lagged when I was checking my Gmail. I tried rebooting it and opened both Facebook and Gmail and it didn’t lag after that, then I used Twitter and it lagged again. Rebooted, opened twitter, lag was gone. I didn’t do anything to try to fix the lags, which were random. Then, about a couple of days ago, the phone lagged extremely and it froze to the point that it would no longer respond to my touches. I left it for 10 minutes thinking it would fix itself after some time, it was still frozen. So, I removed the battery and rebooted it, everything worked fine until it lagged again, then froze. I’m worried. It’s a new phone and it should work without any issues. Can you help me fix this problem, please? — Kate

Troubleshooting: Hi Kate. It is almost certain that a third-party app caused this problem but we need to be sure. So, to isolate the problem, please refer to the simple troubleshooting guide I outlined for you below:

  1. Boot Galaxy Note 4 in Safe Mode and observe closely if there are instances of lagging and freezing.
  2. If the phone neither lags nor freezes in safe mode, then it’s confirmed that the culprit is one of your downloaded apps.
  3. Find the app that’s causing the problem and try to clear its cache and data first. In case it fails, uninstall or disable the app.
  4. However, if the phone still lags and freezes in safe mode, the culprit may be one of the pre-installed apps or the firmware itself.
  5. To rectify firmware-related issues, perform factory reset.

Galaxy Note 4 Became Very Slow

Problem: Hi. My phone became extremely slow as of late. It’s a Note 4 and I just have it for a couple of months (or even less), so I’m surprised how it performs very poorly now. I installed more than 20 apps I think and I’m not sure if one of the is the cause. Since the phone is new, I expected it to be stable and fast but I was wrong. But seriously, I need help since I’m not a tech person and I’m afraid I might mess it up even more if I did some troubleshooting on it. Can you help me? — Mary

Troubleshooting: Hi Mary. Since we don’t know what caused the problem, we need to troubleshoot your phone. I believe one of your apps caused the phone to run very slowly. When it comes to performance-related issues, the most common suspects are third-party apps, pre-installed apps, and recent updates. Please follow the troubleshooting steps below:

  1. Boot the phone in safe mode to see if its performance improves.
  2. If the phone performs poorly in safe mode and there was a recent update, boot the phone in recovery mode and wipe the cache partition.
  3. If the phone is slow in safe mode but there were no recent updates, proceed with factory reset via settings. (Don’t forget to backup your data first.)
  4. If the phone performs fine in safe mode, a third-party app(s) may be causing the problem. Find that app and wipe its cache and data. (Note: You will lose all your settings and saved game if you clear the data)
  5. If it still performs poorly in normal mode after the cache and data of the suspected app(s) have been cleared, uninstall the app.
  6. In case you don’t know which of your apps is causing the problem, backup your data and perform factory reset.

Galaxy Note 4 WiFi Switch Greyed Out

Problem: Hi droid guy. I hope you can help me out with my problem. I can’t turn the WiFi on because the switch is greyed out. I already encountered this problem once but the phone fixed itself after a few hours. However, this time, it’s already more than two days that the WiFi switch is greyed out and I honestly don’t know what to do. I’m afraid that I can mess some settings if I troubleshoot it, so what I did was the reboot the phone and I’ve done it many times already. Have you heard of this problem before and do you know how to fix it? — Leo

Troubleshooting: Hey Leo. There are apps that can turn the WiFi on automatically and more often these apps were installed by your provider to avoid high data usage. There are times when these apps will create conflicts with Android’s service that handles WiFi connectivity. As a consequence, the phone becomes “confused” and this results in either an error when the WiFi is turned or the switch being greyed out.

One way to solve this problem is to boot it in safe mode and turn the WiFi from there. Once turned on, you just need to reboot the phone normally and the switch will not be greyed out after that. However, if the switch is still greyed out in safe mode, then wiping the cache partition will take care of the problem. Actually, you can just proceed immediately to wiping the cache partition without booting in safe mode.

Galaxy Note 4 Stuck On Logo After An Update

Problem: Last night there was some kind of a software update so I downloaded it. After more than an hour, the phone rebooted itself and instead of going into the Home screen, it’s stuck on the logo. I removed the battery, replaced it then turned the phone on, still the same. I left the phone on that screen and went to sleep thinking it would be fixed once I wake up. When I woke up this morning, I found the phone screen turned off. I hit the lock key but it stayed like that, so I plugged it in to charge. It did charge but when I turned it on, it’s still stuck on the logo. The update may have messed up my phone and it’s very frustrating. Can’t we have a phone that’s already updated? Seriously, having to update a phone isn’t easy and there’s no guarantee that it would work after the update. All I want is my phone to be fixed. Help me out please. — Dakota

Troubleshooting: It’s obviously a firmware-related issue that happened after an update. The thing about updates, even minor ones, is that some data will be altered. It goes without saying that they may have adverse effects on some apps and even to some core functions. More often when there are conflicts, the phone will boot in safe mode and in some cases, it will be stuck on the Samsung logo. To address this issue, boot the phone in recovery mode and wipe the cache partition.

  1. Turn off the Galaxy Note 4 completely.
  2. Press and hold the Volume Up and the Home keys together, then press and hold the Power key.
  3. When the Note 4 vibrates, release both the Home and Power keys but continue holding the Volume Up key.
  4. When the Android System Recovery shows on the screen, release the Vol Up key.
  5. Using the Volume Down key, highlight the option ‘wipe cache partition’ and press the Power key to select it.
  6. When the wiping of the cache partition is finished, highlight ‘Reboot system now’ and hit the power key.

The phone will reboot longer than usual but it must boot up to the Home screen this time.

Laptop Can’t Recognize Galaxy Note 4

Problem: Hi! My dad just gave me a new Galaxy Note 4 and a Dell laptop. When I tried connecting the phone to the laptop, the computer can detect something was plugged in but can’t recognize it. As a result, I can’t copy my music files to the phone. What’s confusing me is that when I connect my new phone to the old laptop, it can easily be detected and recognized. I’m contacting you because I don’t have any idea how to get these two new devices recognize each other. I will be bringing them to college so I would be very grateful if you can help me out and save me from a lot of troubles in the future. — Carrie

Solution: Hi Carrie. USB drivers are needed so that your Note 4 can be recognized by your new laptop. I don’t know what the model of your phone is but try to find your device from this page. Click on a product that has the same model as yours and once you reach the product page, find the Downloads section and from there, you can find the drivers for your device, which you need to install to your computer so it can recognize your phone.

If, however, you find it difficult to find your product, it would be better if you download and install Samsung Kies on your laptop. It serves as a file manager and brings along all necessary drivers for all Samsung mobile phones. Needless to say, once you’ve successfully installed the software, your phone can be recognized by your laptop without a problem.

Galaxy Note 4 Volume Key Acting Up

Problem: Greetings, I have had my Note 4 for a week now. Everything was perfect until I dropped very little liquid on it, screen went black. Dried it out the whole night and everything came back to normal, had some issues with the back speaker during calls and playing music, but it came back to normal. However, the side volume up key isn’t responding and is acting on his own. Please help. — Yasmina

Suggestion: Hi Yasmina. It is possible that the Volume key or its switch is still damp or corroded. I’m pretty sure general cleaning of the phone can fix it but I suggest you let a technician do it for you to make sure your warranty stays safe when the phone is opened. But before you actually send the phone to a tech, try to press the Volume keys (Vol Up and Down) several times to see if that makes a difference. More often, corrosion will disappear by doing that.

Galaxy Note 4 Can’t Scan For Network

Problem: Hi, I have been using my Note 4 for about a week now. It has been working perfectly but I started having problems last night when it wouldn’t connect to a network. I removed the battery and sim countless of times to see if it will work but it didn’t. If I go to Settings and Mobile Network and select scan for network, it gives me an error message saying it can’t scan for network.

I usually switch the mobile data off when I’m at work and at my in-laws as they have wi-fi. But after coming home, it just couldn’t connect me to a network.

I’ve also tried inserting the sim in another phone, and it’s working. So it’s most probably the Note 4’s setting that needs reconfiguring. Hope you’re able to help me out. Thanks. Kind regards, Zahrah.

Troubleshooting: Hey Zahrah. It could be just a minor glitch in the firmware. Boot the phone in safe mode and try scanning from there. Moreover, follow the steps below so that the will just automatically switch from WiFi to mobile data:

  1. From any Home screen, tap the Menu key.
  2. Tap Settings.
  3. Tap the Connections tab.
  4. If necessary, tap the Wi-Fi Switch to On. The Switch moves right and turns green.
  5. Tap Wi-Fi.
  6. Tap the Menu key, then choose Advanced Settings.
  7. Check ‘Auto network switch’ option.

Furthermore, I encountered issues like this before that was caused by a hardware problem. So, if the phone failed to reconnect to the mobile data network while in safe mode, backup your data and perform factory reset first. That would be your last resort and if that failed too, then send your phone in for repair or further assessment.

Samsung Galaxy Note 4 Proxy Problem

Problem: Hi, I have just been looking at your website for an answer to my problem. I have a new Galaxy note 4, SM-N910F running Android 4.4.4.

When I connect to facebook I get the “cannot load try again message” or if I connect the internet using chrome or the normal internet browser that comes with it using my virgin WIFI either on 2g OR 5g i get the message “cannot connect to the proxy server”.

I have gone into settings/connections/wifi and long pressed that particular connection, selected “modify network config” – shown advanced settings and changed the “proxy” to “NONE” as advised on other forums.

That works but all of a sudden for some bizarre reason it reverts back to “manual”. I have also seen somewhere that you can change the IP settings to “Static” rather than “DHCP” but I have tried that and this doesn’t seem to make a difference the phone just reverts back to “Manual”.

I have noticed on your website that someone had a similar problem with a Galaxy Note 10.1, I have one of these devices also and never had this problem.

I have just recently installed Kaspersky on the NOTE 4 as I have installed the Barclays apps and they recommend using it and also offer the anti virus for free. I just wonder if this is why it is happening on my phone, I DO NOT have Kaspersky on the 10.1 or the Barclays apps. I do have AVG on the 10.1 and as I have said never had this problem with the 10.1.

Can you give me any advise? seems to me that it may be Kaspersky, if so which anti virus would you recommend (if any) if I cannot use this one due to this reason! Thanks. — Craig

Suggestion: It happens not just to Note 4 but also to S5, Note 3, S3, etc. I know a lot of people who had this problem once, all have Kaspersky in their phones. You have actually three options to choose from and each one can fix the problem:

  1. Uninstall Kaspersky and use other security suites. There’s a lot of free and paid security apps in the Play Store. Choose whatever works best for you.
  2. Uninstall Kaspersky and download the latest version. You might object to this knowing you can simply update the one that’s in your phone. But for me, give the phone a fresh copy of the app so I suggest that even before you uninstall it, clear the cache and data first. Then uninstall and then download a fresh copy from the Play Store.
  3. Lower web-filter protection lever to “low protection”. This procedure is recommended if you don’t want to get rid of Kaspersky from your phone. Lowering the web-filter protection level down will prevent Kaspersky from reverting proxy server to “manual.”

Galaxy Note 4 No SIM Card Error

Problem: Hi Harold, I upgraded to Note 4 from S3 a couple of weeks ago. I used my original SIM card and it worked fine since then. However, today, I’m getting the No SIM card error and I’m wondering if you guys can help me fix this problem. How can a phone that’s working for a couple of week suddenly can’t read the SIM card? Thanks. — June

Suggestion: Hi June. The “No SIM card” error means the phone can’t detect a SIM card that is mounted in its slot. It could be because the SIM card itself is damaged or the phone has a difficult time making contacts with the card’s receptors. I suggest you try cleaning the SIM card’s connectors with a dry cloth and mount it back in. If the phone can’t detect it, call your provider as it is a possible SIM card problem. They may send a replacement SIM that you will receive in about 3 to 5 days. Until then, you can’t use your phone for calls or text messaging, just WiFi.

Galaxy Note 4 Can’t Connect Via Mobile Data

Problem: My new Note 4 is 3 weeks under possession and since then I haven’t tried connecting it via mobile data network because I have WiFi at home and at work. However, when I travelled Chicago, I didn’t have a WiFi network to connect to so I decided to use mobile data but I wasn’t able to do so. I didn’t bother to troubleshoot considering the fact that I wouldn’t have to use it often. But it would be better if I can just connect to it in case I’m out of WiFi range and there’s no Starbucks in sight. — Sean

Suggestion: Hi Sean. I’m not sure what your provider is but I think the problem is with the APN settings in your phone; either what you have in your phone is incorrect or the device itself is not configured to connect to mobile data network. I suggest you call your service provider and ask the rep to configure your phone to connect to their network. You will either be provided with the APN for your phone or your phone will be configured. Your provider has more answers when it comes to these things.

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11 Replies to “Samsung Galaxy Note 4 Problems, Errors, Glitches and Solutions”

  1. I have the same issue. It is a Verizon phone. It will not read any Verizon SIM card. However, when I insert an AT&T SIM card, it recognizes it right away. I have no solution, but the fact that it recognizes the AT&T SIM leads me to believe that it is not a hardware issue. Now, if the AT&T SIM cards are a different thickness, that could lead to a solution.

  2. Can someone please assist me with, why my note 4 doesn’t support the music files transferred from my laptop to a micro sd card?

  3. i m facing a problem with my Galaxy Note 4 N910K South Korean Model, i was using LTE yesterday, suddenly my signals dropped and lost it, then i restart my phone i got signals but when i turned on my 3G/4G, signals dropped again,in 2G/GPRS its working fine ,please suggest me i have done factory reset, flashed my phone but problem still the same :/ i m from Pakistan

  4. I have had the Galaxy Note 4 for a few months now. I do have it rooted and I have the wifi teather router app. I don’t have Internet at home, therefor, I use my phones Internet for my home computer and my son’s phone. Lately, my phone has been freezing to where I need to pop the battery out. Could the wifi teather router app be causing this?

  5. I just recently got a Note 4 and the most annoying thing that I have encountered is my entire watsapp message is displayed when I pull the screen down…or while I am sending a watsapp message another message comes at the top of the screen and doesn’t move unless I tap/scroll it away. I have had an S3 and S4 and didn’t have this happen…how can I disable that feature!!!…Help!!!

  6. turn off – turn on – at samsung logo hold down volume button until it takes you to home screen (this time with the word SAFE MODE t the bottom left of screen)

  7. This is my first time reading the Note 4 blog. The troubleshooting steps listed say to boot in Safe Mode, how is this done?

  8. My Galaxy note 4 says my home network is not in range and does not always connect automatically. If I reboot my Note 4, the phone connects to my network. The settings on my note 4 were imported from my galaxy s3 which was just traded in last week.

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