Galaxy Note 4 won’t read MP3 files from SD card, other issues

Note 4 music player

For those looking for solutions to some other issues on their #GalaxyNote4, the solutions below may work for you. These are the particular topics discussed here today:

  1. Galaxy Note 4 won’t read MP3 files from SD card
  2. Galaxy Note 4 randomly restarts
  3. Galaxy Note 4 charging problems
  4. 4G keeps disappearing on Galaxy Note 4
  5. Galaxy Note 4 won’t AC charge

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Problem #1: Galaxy Note 4 won’t read MP3 files from SD card

My phone is not accessing mp3, etc from it 64GB SD card. I have tried different SD cards and none are working except for a 8GB card that works fine for some reason. I would like to be able to have more storage and don’t see why having a bigger GB card would make the phone not work. One of the cards i have makes the phone turn off, and then constantly restarts itself back to back.

I should mention that I am transferring the songs from a Macbook Pro 10.11.3 OS X El Captain. Like i said, it works fine with the 8GB card, but as soon as i try and use the 64GB to play the music that i transferred, the music player says, “sorry the player does not support this type of audio” even though they are all mp3 and not corrupted.

I have tried rendering the mp3s different, and it works until the phone is restart or clicked off, then it goes back to the same issues. Would really appreciate some help, i feel I’ve tried everything but a master reset, and from what I’ve read that will only work temporarily. Could my phone be corrupted or bad? Thanks. — Ryan

Solution: Hi Ryan. This is definitely an interesting case. It’s the first time we encounter a Note 4 selectively playing music files from a known working SD card. The problem may be caused by a third party app, or a corrupted firmware so there are only two things that you can try here — boot the phone in safe mode and perform a master reset.

Booting in safe mode will help you determine if another app interferes with the operating system or the music player. Since there’s no streamline way to pinpoint which app may be the culprit, you will have to uninstall apps until the issue has been eliminated afterward, provided that the issue won’t occur in this mode. If you haven’t tried how to do this yet, here are the steps:

  • Turn off the phone completely.
  • Press and hold the Power key and the Volume Down key.
  • When the phone starts to boot, release the Power key but continue holding the Volume Down key until the phone finished restarting.
  • Safe mode will be display at the lower left corner; you may release the Volume Down key now.

If nothing changes and the issue remains even when the Note 4 is in safe mode, proceed to factory reset. For reference, here are the steps to do it:

  • Turn off the Galaxy Note 4 completely.
  • Press and hold the Volume Up and the Home keys together, then press and hold the Power key.
  • When the Note 4 vibrates, release both the Home and Power keys but continue holding the Volume Up key.
  • When the Android System Recovery shows on the screen, release the Vol Up key.
  • Using the Volume Down key, highlight ‘wipe data / factory reset’ and press the Power key to select it.
  • Now highlight ‘Yes — delete all user data’ using the Volume Down key and press the Power key to begin the reset.
  • When the master reset is complete, highlight ‘Reboot system now’ and hit the Power key.
  • The Note 4 will restart but it will be longer than usual. When it reaches the Home screen, then begin your setup.

Problem #2: Galaxy Note 4 randomly restarts

Hi DroidGuy. My Note 4 is in real bad shape. I need some help desperately. Please read the very long email and see if you can help.

  1. Model: SM-N910F purchased on eBay from UK around Feb 2015 and worked with no problems till last week.
  2. Background: I had rooted the phone as soon as I got my phone and have been rooted for the last 11 months or so.
  3. Issue: Random restarts, heavy lag, screen won’t turn on (when pressing home / power button) but notification light keeps flashing, restarts just fine when battery is removed and reinserted but faces the problems again, screen not responsive to touch, frequent “App crashed” messages for a variety of apps. Sometimes, the device blanks out as soon as I connect the charger but notification lights stay on even then.
  4. Weird and scary messages:

When the problem started I was on 5.0.1 rooted with TWRP recovery installed for close to a year. On some occasions, restart over the last week shows the following error:

Could not do normal boot.

ddi : mmc_read failed

And ODIN Mode is thrown up. Then I connected to Samsung Smart Switch and updated to latest software version of 5.1.1. After that:

E: failed to mount /efs (Invalid argument)

dm_verity verification failed on recovery screen, followed by a series of

E: failed to mount /cache (Invalid argument)

E: failed to mount /cache/recovery/last_install (Invalid argument)

On performing data wipe through standard recovery:

E: cannot zeroise for MDFPP(/dev/block/platform.msm_sdcc.1/by-name/userdata)!

On choosing to “Reboot system now” option from standard recovery phone just turns off but does not turn on.

  1. What else I have tried:

Running the phone on Safe Mode — does not solve the issue either.

Updated the drivers on my machine before flashing the stock ROM available on Sammobiles.

Flashed 5.0.1 ROM available for Germany, Romania through ODIN myself.

And obviously, as stated above, updated to latest version through Smart Switch.

Asked Samsung India to check if my battery is fine. They used some meter and said the battery had no issues.

When I tried to update the software from inside the phone, the phone crashed which later gave me the message that software update failed and I should connect to Kies for the update.

  1. The other major issue in my case:

I purchased the phone from UK and have moved to India since then after a change in my employment. Now when I take my model to Samsung here in India, they deny support. When I reached out to Samsung UK – they want me to ship the phone to UK from a UK address (so they can ship it back to that address).

  1. About phone:

Baseband Version: N910FXXU1COJ3

Build Number: LMY47X.N910FXXU1COJ3

Caught up in big time trouble. Are any of these issues familiar to you? Do you have any suggestions for me? Any help would be appreciated. Please let me know if any additional information would help you in this? Regards. — Vishwanath

Solution: Hi Vishwanath. The current OS on your phone may have been corrupted somehow after a number of modifications. This means that the flash memory itself may be bad that even switching to a known working official firmware no longer functions fine. Keep in mind that your phone’s primary flash memory is basically like an ordinary SD card or USB flash drive, which can get corrupted if not handled properly. Although highly common, NAND flash memory (the other term for your phone’s internal storage) failure is not that widely advertised so it’s hardly surprising that many devices suffer boot or total memory loss problems. ZDNet has a good explanation how a NAND flash storage can fail.

Our theory is that the a critical file or set of files may have somehow become written permanently somehow in your phone’s memory after a number of firmware modifications. Such situation may be preventing official or other custom ROMs to be flashed properly, resulting to random reboot or abnormal OS behavior. Unfortunately, such situation is not fixable. You either have to force Samsung to replace your phone somehow, or you can just get a new unit.

 Problem #3: Galaxy Note 4 charging problems

Dear TDG. I’m facing the same problem as the one you wrote on your article, which is, my Note 4 is only be able to charge up to 90 – 92% , then it got stuck. it’s not an apps related issue i guess, because the apps is the same as before, and no problems at all.

i first encounter this problem, when i got my phone locked, and i need to bring it to an official Samsung service center, to re install the software, so i could unlock my phone. They updated it to 5.1.1 , then, i found out this problem. I already upgrade it twice, and the problems are still the same. I’ve tried to recalibrate it, but nothing changes.

what i want to ask are:

  1. how long do you need to charge your Note 4 (if i aint mistaken, i used to charge it around an hour and 10 to 20 minutes, but now it takes longer and can’t be fully charged)?
  2. how to clean the port by yourself?
  3. how to enter safe mode?
  4. the battery life is normal on my daily usage, but the charging itself takes longer than usual

please help. Regards. — Wendy

Solution: Hi Wendy. We think you’ve read our previously published post about this issue so let’s answer your questions individually.

  • The time that it takes for your Note 4 to charge depends on a few things. If you are using a fast charger and the fast charging feature works properly on your device, it can only take up to 30 minutes for the battery to go from zero to 50% capacity. A full fast charge may only take less than 2 hours. If you are using a normal charger, or if there’s a problem with fast charging feature on your phone, it may take up to over four hours to reach 100%. If your phone drains power while charging due to running or problematic apps, the process may even take longer.
  • Cleaning the port does not involve much. You simply have to blow over the charging port to remove visible dirt or foreign object that may cause poor contact with the charger jack.
  • We mention how to boot in safe mode above.
  • Please refer to the first answer for your fourth question. You may also be able to gather some tips from this short guide on how to extend the battery power on your phone.

Problem #4: 4G keeps disappearing on Galaxy Note 4

Hi. I was reading a list of common problems on your forum but I did not find a listing specific to my problem. I hope you’ll be able to help me out.

I bought a used Note 4 ATT phone from a guy and within a day, I started noticing that my 4G network keeps disappearing (it still shows the T-Mobile icon on the left top corner but 4G icon is gone).  He unlocked the phone and I’m currently using T-Mobile on the phone. It still has all the ATT stuff on it. The Wi-Fi works fine and the Smart Switch is disabled.  I’m still able to make phone calls and send texts and when I do make phone calls, the 4G bar reappear but only for as long as the phone call is in progress and then after the call ends, it usually disappears within a minute to few minutes.

The phone model is Samsung-SM-N910A

Android Version: 5.1.1

Baseband version: N910AUCU2DOI2

I hope this is detailed enough.

Thank you for your help in advance. — Grace

Solution: Hi Grace. Please do a master reset (steps provided above) first to see if there’s a firmware bug that causes the phone to temporarily lose 4G connection. Make sure to test if this is the case without installing any third party app after a reset. This will help you check as well if an app messes up with the network function. We haven’t run into someone with this issue yet so this may be an isolated case.

If nothing changes after a master reset, make sure to call T-Mobile to they can help you check if the phone’s APN settings are correct.

 Problem #5: Galaxy Note 4 won’t AC charge

A/C charging just stopped one day. Phone only USB charges no matter what charger or what cord. Also, not recognized by laptop through USB connection. I’m thinking that the charging port may be bad. I changed flex port twice. Once myself and the other time by a reputable repair store just to make sure i didn’t screw it up. Still no ac charge only usb charge.

Fast charge greyed out when plugged in. Tethering and usb connection also greyed out when plugged in. Phone less than a year old and rooted. I rooted it the first week i had it almost a year ago. This issue started in August or September.

 I carry 2 batteries and an external battery charger. Unbelievable disappointment and confusion. Unable to use ODIN or KEIS to flash any updates or stock firmware. I’m thinking its gotta be the motherboard.

What else could it possibly be? Fortunately the motherboard is easier to replace myself cause you don’t have to remove the screen from LED. Any advise or suggestions would be great. No upgrade until 2017. Thank you. — Todd

Solution: Hi Todd. The charging process is managed by the operating system and if power management function is messed up, this may be the reason why your Note 4 won’t charge off a power outlet. Try doing a master reset and see how it works afterwards. Otherwise, there’s really nothing that we can suggest to fix it other than have it replaced.



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