Galaxy Note 5 keeps reconnecting due to bad operating system, other issues

Hello Android fans! Welcome to our latest #GalaxyNote5 troubleshooting article. Today we discuss some common issues that a lot of Note 5 users have encountered in the past and at present. Specifically, we are addressing operating system problems so hopefully, this material will serve as a good reference for those who may have some problems.

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.

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.

Below are specific topics we’re bringing for you today:

Problem 1: Galaxy Note 5 keeps disconnecting and reconnecting due to bad operating system

I have a weird problem. Recently I bought an unlocked Galaxy Note 5 from a retailer, Techcity Canada. The phone started to disconnect and reconnect to the charger. I went to the retailer. They informed me that the charging port is not covered by warranty. I bought a wireless charger. Still it kept on disconnecting. Later on it started to try to disconnect and reconnect even when it is not connected to anything or not even close to the wireless charger, in my pocket, on the side table. The sound of connecting and reconnecting wakes us up at the middle of night. I searched the Internet tried couple of suggestions, including yours. Finally, I figured out that the problem is not with the port, the operating system is modified which interferes with the charging and when the battery is low it triggers the issue. Fixing is going to cost me a significant amount. Normally, it does not connect to PC, but in download mode it connects and Smart Switch says “Unsupported Device.” — Manir

Solution: Hi Manir. Owning a pre-owned device can sometimes be a game of chance. If you’re lucky, it may work normally. For those who encounter problems, though, you can either attempt to resolve the issue or return the item.

If you are positive that the reason for the problem is due to an operating system issue and you want to see if you can fix the issue at your end, consider reflashing the bootloader first. If reflashing the bootloader won’t work, then try flashing a stock firmware.

For reference, below are the general steps on how to reflash a bootloader of a Samsung device. Exact steps may be slightly different so be sure to consult other guides for your phone model.

  1. Look for the correct firmware for your phone model and download it. Make sure that you select the right one. It should be the same exact firmware that ran previously on your device. We assume that you list down the firmware version somewhere. If you did not take note of it before, there’s a chance that you may pick the wrong one. As you may know now, using an incorrect firmware can cause complications so good luck with that.
  2. Let’s now say that you have identified the correct firmware. You then want to download it to your computer. The firmware file should have a bunch of files in it like AP_, BL_, CSC_, etc.
  3. Look for the file that starts with a label BL; this should be the corresponding bootloader file for this firmware. Once you’ve identified the bootloader file, copy it to your computer’s desktop or to any other folder that you can easily access.
  4. Proceed with the rest of the flashing procedure using the Odin program.
  5. In Odin, click on the BL tab and make sure to use the bootloader file you’ve identified earlier.
  6. Now, make sure that the “Device Added” status and its “ID:COM box” has turned blue before hitting the START button. This will initiate the flashing of your phone’s bootloader.
  7. Restart the phone once the procedure is finished.

Flashing a firmware can be similar in large part to the steps above. Again, we suggest that you look for more accurate guides on how flash a firmware in your phone. The steps above are just for demonstration purposes only.

Problem 2: Galaxy Note 5 locked out due to Factory Reset Protection (FRP)

Hi Droid Guy. My son gave me his wife’s Note 5 (she upgraded to Note 8) and I did a master reset, not knowing about FRP. We don’t have the gmail address/password, so I bought an OTG cable to install the .apk that you suggest downloading.  However, the phone won’t launch the File Explorer when I plug in the OTG. I’ve tried two USB drives (both FAT32) without success. Not 100% sure about the Android version but he believes it shipped with Lollipop. Would you please point me to a link with another solution? Thanks. — John Jacobs

Solution: Hi John. Since Factory Reset Protection was released a couple of years back, there’s been a number of unofficial ways to work around it, one of which is by using an OTG cable or device. If this workaround no longer works, that means Samsung had already patched up the glitch which made it work before. At this time, the only unofficial method of defeating this security feature is by flashing. Some Youtube videos claim to still work though so kindly check them if you have the time. We haven’t tested any of them though so we can’t really recommend which particular video is still working right now.

Problem 3: Galaxy Note 5 won’t stay on unless connected to charger

Just today I started having issues with my Samsung Galaxy Note 5. Right now it will not turn on, light up, anything at all unless it is plugged in. If it’s plugged in, it will show that it’s charging, then if I try and turn it on it gets stuck in a loop of booting up and immediately turning back off, then booting back up again, over and over.

I’ve tried rebooting by pressing power for 20-30 seconds, holding power and down, and power down and home at the same time and nothing seems to have an effect. Is there a solution to this issue? — Victoria

Solution: Hi Victoria. An important missing component in your problem description is the history of your device. Not telling us the relevant possible reasons that may have led to your issue makes to simply guess what’s causing the problem. Based in our years of experience troubleshooting Android devices, the two most common causes for an issue like yours are physical damage (accidental drop or exposure to elements) and unofficial software modification/tampering. If your phone was dropped or got wet before it started to act the way it does right now, stop wasting your time looking for software solutions. Instead, you should focus your effort in seeing to it that the internal components are dried out properly, or damaged components replaced. Any hardware issue your phone may have can’t be fixed by doing some software procedures. If possible, send the phone in to Samsung so its hardware can be checked.

On the other hand, if you tried to tamper with the software by installing a root software or by flashing, you should have known that there’s a risk involved. No Android newbie will try rooting or flashing so you must be an average user who knows the risks of modifying software. Hence, we assume you’ll know your way out of this situation.

However, if the issue occurs out of a sudden and the phone has never physically impacted/damaged, nor was the software tampered with at all, then you may be able to fix the problem by attempting two basic software troubleshooting steps — battery recalibration and factory reset. If these two won’t fix the problem either, you must tap the help of a professional to examine the hardware for you.

For reference, here are the steps on how recalibrate the battery and do a factory reset.

How to calibrate Galaxy Note 5 battery

  1. Drain the battery completely. This means using your device until it powers down by its own and the battery level reads 0%.
  2. Charge the phone until it reaches 100%. Be sure to use original charging equipment for your iPhone and let it charge up completely. Do not unplug your device for at least two more hours and also don’t use it while charging.
  3. After the elapsed time, unplug your device.
  4. Perform a warm restart by holding the Power and Home buttons simultaneously until the Apple logo appears.
  5. Use your iPhone until it completely ran out of power again.
  6. Repeat steps 1-5.

How to factory reset a Galaxy Note 5

  1. Turn off your Samsung Galaxy Note 5 completely.
  2. Press and hold the Volume Up and the Home buttons first, and then press and hold the Power key.
  3. Keep the three buttons pressed and when ‘Samsung Galaxy Note5’ shows, release the Power key but continue holding the other two.
  4. Once the Android logo shows, release both the Volume Up and Home buttons.
  5. The notice ‘Installing system update’ will show on the screen for 30 to 60 seconds before the Android system recovery screen is shown with its options.
  6. Use the Volume Down key to highlight the option Yes — delete all user data and press the Power key to select it.
  7. When the process is complete, use the Volume Down key to highlight the option ‘Reboot system now’ and hit the Power key to restart the phone.
  8. The reboot may take a little longer to complete but don’t worry and wait for the device to become active.


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