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Galaxy Note 4 mobile data won’t work after using Bluetooth, other issues

Hello everyone! If you’re reading this, you are most probably looking for answers to your own #GalaxyNote4 issue. We hope that the solutions we mention here can help Android community deal with Galaxy Note 4 power issues.

 

Below are the topics that we cover for you in this article today:

  1. Galaxy Note 4 screen turns black when not in use | Galaxy Note 4 overheating issue
  2. Galaxy Note 4 slow performance issue | Galaxy Note 4 reboots when playing video or loading photos
  3. Galaxy Note 4 stuck in Samsung logo screen
  4. Solutions to Galaxy Note 4 SMS problem
  5. Galaxy Note 4 mobile data won’t work after using Bluetooth
  6. Galaxy Note 4 camera error when switching from rear to front camera

If you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page, or you can install our free app from Google Play Store.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.


Problem #1: Galaxy Note 4 screen turns black when not in use | Galaxy Note 4 overheating issue

Hello sir. I have a Samsung Note 4 edge. My phone went black screen when i stop using it but when i am using the phone it works fine until i stop using it. i have to remove battery and put it again and press the power button. It goes into download mode (Odin mode) while charging. When i use it, it works fine but when i keep the phone it goes black. And my phone gets really hot while it is black screen. I did factory reset. I changed firmware. Still the same. Please help me. — Fawad

Solution: Hi Fawad. Factory reset and flashing (installing stock or custom firmware) are two of the most effective solutions for any software issue. If nothing positive happens after doing them, you can assume that the problem may be hardware related. The screen assembly may be malfunctioning or that other components are not working properly causing the screen to stay black and the phone to overheat. Taken together, these symptoms are not caused by any software glitch we know of so we recommend that you send the phone in so its hardware can be checked for errors.

Out of warranty repair is not free so sending your phone to Samsung will cost you something so be ready to shoulder the fee if needed.

Problem #2: Galaxy Note 4 slow performance issue | Galaxy Note 4 reboots when playing video or loading photos

Have already executed these options a) a factory reset. b) removed the memory card. c) Have formatted the memory card. d) Have used another memory card. e) Have change the SIM card from service provided. f) Have uninstalled all apps.

Since the last 2 months, my phone performance has been a laggard. While selecting any icon, or during the process, it takes 3-5 seconds to activate the process. At times, the screen blanks out for 3-5 seconds with the top header visible.

At times, while watching a video or while selecting an image from picture library, it would suddenly blank out, with a sound of vibrate (twice) it would reboot the system (a typical process every time it reboots. It feels that it almost is out of memory to handle and reboots the system. Even now at times when I receive the call, the screen blanks out for 2-3 seconds and then comes on to select the option to talk. The problem still persist. I do not wish to sell it off because of this issue. Kindly guide. — Rajen

Solution: Hi Rajen. If factory reset and uninstallation of all third party apps did not fix the issue, the problem must be one of the following:

  • an operating system glitch
  • a defective battery
  • other unknown hardware malfunction

Flash a stock firmware. Whether your phone is rooted or not, running stock or custom firmware, we recommend that you flash a new stock ROM to it to see if that will help. If you haven’t heard of flashing before, your phone is probably running an official firmware so try to do some digging on how to flash (or install) an official firmware to it like an older version of Android. For example, if your phone is now running Android Marshmallow, try to manually flash older Android to it like Lollipop to see if it will help improve the phone’s general performance. The exact steps on how to flash a firmware is beyond the capability of this post so if you have no clue on what to do, make sure to do some basic research about the topic first. Flashing a firmware can potentially brick a phone so make sure to do the steps correctly.

Try using a new Samsung battery. Many users of older Galaxy flagship phones encounter performance problems due to erratic battery. If your phone is still using the original battery at this time, this part may be in dire need of replacement at this point. Lithium-ion batteries like the one in your phone can significantly lose capacity after using them day in and day out for over a year. Even if you take care of your device, the battery will simply degrade on its own after some time. We’ve seen a lot of cases wherein a bad battery indirectly causes a device to slow down, freeze, or slow down in terms of performance so it’s worth checking at this time. If you have another Note 4 or can borrow a different one from a friend, try using its battery on the first one and compare the performance. Otherwise, simply buy a new one to see if that will fix the issue or not.

Have the phone repaired or replaced. If the two suggestions won’t work in this case, there may a deeper cause to the problem that we don’t know of. A Galaxy Note 4 is consists of hundreds of different parts and they are all expected to work in a chain of activities. If there’s a break in this chain, the entire unit may stop working properly or at all. For example, if there’s a bad transistor in the phone’s processor, such bad component may cause an incorrect timing effect on other transistors, which can do down the entire chain manifesting as a freezing, lagging, or slow performance problem. The same is true for other parts. Sometimes, a technician may not be able to fully identify the cause of the problem at all so he/she may simply declare it as a motherboard issue, which means that the problem is not fixable. In this case, you’ll be advised to simply have the phone replaced.

We don’t know the full history of the device so we can’t even begin to tell you what may be wrong with the hardware. If possible, try to send the phone in to Samsung first so a certified technician can check the hardware. If that’s not possible, consider sending the phone to a third party service center.

Problem #3: Galaxy Note 4 stuck in Samsung logo screen

Verizon stock version of Samsung Note 4 is stuck on logo screen. Happened out of the blue. Today changed from Verizon to T-Mobile in process. Bricked by Verizon?

It is 1 week to the day since dropping Verizon. Left with phone working on Wi-Fi this morning. By the time I returned home 1.5 hours later, I looked on phone to see start screen halt. Tried pulling battery & reinsert plus boot…still bricked on splash Samsung screen. Removed battery, and tried soft boot. Failed. Followed with battery out & drain process followed by cache wipe with SIM in & SIM out, dead &dead.

Attempted cache wipe & restart again, no change. Safe mode shows e: failed to mount /cache no file or directory. E: Can’t mount cache/recovery/last recovery E: Failed to mount /data E: Cannot mount /data/log/recovery log E: Failed to mount /system.

There is more but you get the picture. I am dejected…T-Mobile screwed up massively setting up 2 phones (mine & wife’s) & I never got my texts/contacts/data etc transferred between old & new phone. I have years of business info on the note 4 & desperately need it. — Csminion

Solution: Hi Csminion. As far as software troubleshooting is concerned, your only option at this time is to see if your phone will restart to other modes. If it does, that’s the only time that you can do a specific follow up troubleshooting. For example, if you can manage to boot the phone to recovery mode, you may be able to fix the problem by wiping the cache partition or by factory resetting it. If the phone remains stuck in Samsung logo screen and won’t get you nowhere, something must have damaged the bootloader causing the device to pause and unable to do the complete boot up process. In this case, like in the cases above, you should find a way to have the phone repaired or replaced.

For reference, below are the exact steps on how to restart a phone to a specific boot mode and how best to solve your issue afterwards:

Boot in Recovery mode:

  1. Charge the phone for at least 30 minutes.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  6. You can either wipe the cache partition or do a factory reset when in this mode.

Boot in Download Mode:

  1. Charge the phone for at least 30 minutes.
  2. Press and then hold the Home and Volume DOWN keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume DOWN keys.
  4. Wait until the Download screen appears.
  5. If you can boot the phone in download mode but not in other modes, that means that your only way out may be to flash a stock or custom firmware.
  6. Use Google to look for a guide on how to do it.

Boot in safe mode:

  1. Charge the phone for at least 30 minutes.
  2. Press and hold the Power button.
  3. Once the ‘Samsung Galaxy S7’ logo appears, release the Power key and immediately press and hold the Volume Down button.
  4. Continue holding the button until the phone finishes rebooting.
  5. Once you see the text “Safe mode” at the bottom left corner of the screen, release the Volume Down button.
  6. The only difference of safe mode from normal mode is that the former prevents third party apps from running. If you can boot the phone in safe mode but not in normal mode, uninstall all apps until the issue (that prevents you from booting normally) is eliminated.

Problem #4: Solutions to Galaxy Note 4 SMS problem

I just signed up for T-Mobile prepaid Family Talk Plan. I know this is old news since the Note 4 is ancient, but if I can avoid buying a new phone right now, that would be great.

My data works, just not my text messaging service. I believe I do not have the right call center number but can not get your workaround to work on my phone. Can you help me out? I have no other way to find it via settings, or I am missing where it is located. To change the message center number of your phone go to the dialer and enter *#*#4636#*#*. If all goes well you should be brought to a hidden menu setting on your phone. Select phone then scroll all the way down to SMSC. Make sure to change this to the number T-Mobile is using which is +12063130004. You can also access this message center number from the messaging settings of your phone. — Kaydevmom

Solution: Hi Kaydevmom. One of the symptoms of an incorrect message center number issue is being unable to send SMS and MMS. If this is your problem or whatever your SMS problem is, we recommend that you contact your carrier first so they can walk you through the entire troubleshooting procedures for this issue. You also need to ensure that you have the correct Message center number from them and not from any unverified third party sources from the web.

Most SMS and MMS issues are caused by network problems so third party technicians like us are of not much help. Unless you tend to modify SMS and network settings all the time, SMS and MMS problems are mostly due to service interruptions that are beyond an average user to fix.

Some messaging apps may interfere with the default messaging apps in a phone sometimes so if you installed another messaging app, you can try to observe the phone to safe mode as well. Safe mode prevents third party and services so if you’ll be able to text normally, that’s proof that one of the apps is the culprit. To boot in safe mode, follow these steps:

  1. Press and hold the Power button.
  2. Once the ‘Samsung Galaxy S7’ logo appears, release the Power key and immediately press and hold the Volume Down button.
  3. Continue holding the button until the phone finishes rebooting.
  4. Once you see the text “Safe mode” at the bottom left corner of the screen, release the Volume Down button.
  5. The only difference of safe mode from normal mode is that the former prevents third party apps from running. If you can boot the phone in safe mode but not in normal mode, uninstall all apps until the issue (that prevents you from booting normally) is eliminated.

As far as changing of the message center number goes, here’s how it’s usually done:

  1. Open the Messages app.
  2. In the message list, press Menu.
  3. Tap Settings.
  4. Tap Message Center
  5. Enter the correct Message Center number.
  6. Press OK

In phones running Marshmallow and Nougat, there’s a slightly different way to do it. Below are the steps you have to take:

  1. Open the Messages app.
  2. Tap the Menu icon (three-dot icon on the top right side).
  3. Tap Settings.
  4. Tap More settings.
  5. Tap Text messages.
  6. Tap Message center number field to edit.
  7. Tap Set to confirm change.

If your problem continues after booting to safe mood, uninstalling apps, or with a new Message Center number, you can also try to wipe the messaging app’s cache and data. Here’s how:

  1. Open the Settings menu either through your notification shade (drop-down) or through the Settings app in your app drawer.
  2. Navigate down to “Apps”. This may be renamed to something like Applications or Application Manager in OEM skinned versions of Android 6.0.
  3. Once in there, click on an application.
  4. You’ll now see a list of stuff that gives you information about the app, including Storage, Permissions, Memory Use, and more. These are all clickable items. You’ll want to click on Storage.
  5. You should now clearly see the Clear Data and Clear Cache buttons for the application.

Problem #5: Galaxy Note 4 mobile data won’t work after using Bluetooth

My Samsung Galaxy Note 4 is able to access the internet using wifi and cell network. However after using Bluetooth, I cannot access the internet or email via cell network (Koodoo) but text works and voice calls work as well as accessing the internet using WiFi. I have tried removing the battery to reset, that did not work. I have also tried to turn off network access then back on and that does not work. I have checked the APN settings and all are correct. After hours or days it somehow gets reset and starts working again (until I use Bluetooth and the problems reoccurs).

When accessing the internet I get a “Cannot find proxy server error). I suspect that I have to reset something after using Bluetooth but I do not know what it is. — Grant

Solution: Hi Grant. Try doing a safe mode first to see if a third party app or service is interfering with the Bluetooth or mobile data functionalities of the phone. If you can’t replicate the issue while the phone is in safe mode, you can assume that one of the apps is problematic. Try to uninstall apps you installed recently or any app that may use Bluetooth or mobile data in order to work. If you can’t isolate the bad app, consider uninstalling all third party apps until the issue is eliminated.

However, if the problem remains even when the phone is in safe mode, we recommend that you do a factory reset if you think something has been misconfigured. Make sure to create a backup of important files before doing this type of reset.

To factory reset your Note 4, 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.

Problem #6: Galaxy Note 4 camera error when switching from rear to front camera

Front camera server error when I open camera and when I switch from rear to front camera. I’ve reset my phone on airplane mode and it works shortly after that on occasion.

I also reset the cache partition and no luck. I even cleared the data and camera cache. I’m having a hard time figuring out the issue and it started only recently when I downloaded Snapchat. I uninstalled the app and nothing has changed. Hopefully you can help me, I’m looking forward to hearing from you thanks! — Astrid

Solution: Hi Astrid. Like Grant above, we suggest that you try observing the phone in safe mode first. If that won’t help, you can then proceed to doing a more drastic step of factory reset. This will help you determine if one of the cameras is defective, or if there’s just an operating system glitch causing the trouble. Make sure to test the cameras’ functionality right after a factory reset, when you haven’t installed any app or updates yet. If the problem continues, one of the cameras must not be working properly.

 


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