How to fix a Galaxy J3 that won’t turn on [troubleshooting guide]

Hello Android fans! We bring you another troubleshooting article for the day and this one answers some of the common problems for the Galaxy J3 (#GalaxyJ3). Be sure to scan the entire article for solutions.

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.

Problem #1: How to fix a Galaxy J3 that won’t turn on

My Galaxy J3 turned off by itself and i have not been able to switch it on for 3 days now. When I charge it, it doesn’t display anything or bring out charging information but after a while the rear camera place begins to get hot. P. S: switching off by itself has always happened before but it comes right back up after I remove the battery and put it back. Done that now but nothing is working. I’ve even tried removing my sim and memory card The Galaxy J3 welcome page doesn’t even show.

Solution: There’s a number of possible reasons why your J3 won’t turn on. One of these situations must have happened:

  • there’s a problem with the charging accessories
  • the charging port is broken
  • the battery is fully drained and has stopped receiving charge
  • phone turns on but the screen does not
  • there’s an unknown hardware malfunction

Based on this list, you can perform limited troubleshooting to see if you can fix the issue on your end.

Try another charging cable or adapter

Like the phone itself, USB cables and adapters can break for some specific reasons. cables can stretch, bend, coil, or melt if not taken care of. The adapter can be physically damaged if dropped, or if exposed to temperature extremes. To see if your phone has stopped charging because of a broken cable or adapter, try to use another set. Borrow another known working USB cable and adapter from someone. If possible, you can also visit your local Samsung store to borrow their official charging kits. If money is not an issue, try buying new ones (not recommended though).

Damaged charging port

Another possible reason why your Galaxy J3 has stopped charging may be a bad charging port. This component often gets damaged relatively easily if a user is not careful with how he or she inserts the cable. At times, using third party USB cable may bend or damage it as well. The most common reason for charging port malfunction though is when it has dirt or foreign object like sand, dirt, or pocket lint inside. Try to see if there’s something in the port that doesn’t belong. You can try to use a magnifying tool to see inside. If there’s dirt or lint that you want to remove, try using canned air instead of sticking something inside.

Obviously, checking the port won’t fix whatever damage there may be inside. If you see a bent pin or metal inside, you still need to have the phone repaired.

Bad battery

One of the most common reasons why old phones fail to power back on is the battery. If you have some electronics knowledge, try to use a multimeter to check the performance of the battery. If you don’t know how to do that, you can either let a professional do it for you, or you can just buy a new one.

Screen issue

If your J3 charges, shows LED light, makes sound, or still vibrates but the screen stays black, you have a screen problem. This means that the system is not totally dead but the screen is. Like in bad charging port scenario, this situation requires help from a pro. There’s no software solution for a broken screen, especially if it occurs after a drop or water exposure. To fix the issue, the entire screen assembly may be needed. Make sure to let someone who does phone repair for a living do the job for you. If you are desperate would want to save on repair fees, try to look for videos or guides on how to do it. Keep in mind that screen replacement in this situation is not a guaranteed solution. Your phone may still remain dead afterwards, or worse, suffer from more damage. Do it at your own risk.


One of the least commonly known reason why smartphones fail to power back on is shorting. The motherboard holds hundreds of parts and  if one component has failed or shorted due to water damage or any other physical impact, a technician must try to find it so he or she can decide whether it can be replaced. Good technicians know how to check for possible short circuit so if the suggestions above has not helped at this point, you must send the phone in for repair. If Samsung repair is not possible, try to bring the device to a reputable repair shop.

Problem #2: Galaxy J3 TouchWiz not responding error, restarts randomly on its own

It started with my Galaxy J3 Emerge. I bought it new from my carrier Boost. Not long after I got the phone it started freezing up & “TouchWiz home is not responding would you like to close it?” keeps showing up. Then it started rebooting on its own over & over. I tried safe mode it still  happened. I wiped the cache still same issue so I did a factory reset & that did not help either. So I bought a refurbished Galaxy S6 model G920P again bought through my carrier Boost. I activated my new S6 & the next day this device started doing the same thing as my old phone except instead of TouchWiz isn’t responding it said Media device is disconnected. The S6 will not even turn on unless its plugged into a charger.I’ve taken all the steps I mentioned above that I done to my original J3 device. A factory reset didn’t help. So I’m sitting here with 2 devices doing the same thing. I thought I would be solving my problem with my J3 when I bought the S6. Thank you for your help! #beyondfrustrated.

Solution: If two different phone models have the same problem, you should really consider other factors including the possibility that you may be responsible. Android devices are running complicated software and hardware and there are hundreds of thousands of possible points of failure every time. Given the lack of history and any useful information that can help us identify the problem, all we can think of is the possibility that you, as a user, may be to blame. If you are an adventurous type when it comes to your phones, you may have accidentally triggered an error. This can sometimes occur if a user tinkers with the software or hardware without fully understanding the consequences. For instance, flashing procedures may sometimes result to corrupted partitions, which can sometimes lead to permanent software glitch. A similar situation may happen after rooting or flashing custom ROMs. If you did tamper with the official software, you should find a way to reverse or undo what you did. If the phone started behaving erratically after flashing for instance, flashing back the stock firmware may help.

If you did not change anything at all and the issue happened all of a sudden, it’s possible that the issue may be app-related. This means that one of the added apps may be interfering with Android. You can either try to restart the phone to safe mode and observe it for 24 hours, or factory reset the device and narrow down the possible bad apps one by one afterwards.

Finally, keep in mind that Android troubleshooting is simple. Samsung or Google or any other phone manufacturers did not intend to let users fix any issue with their device. As an end user, there’s only so much that you can do. Frankly, you are only limited to doing basic software troubleshooting. If the issue remains after a factory reset, that means the problem is not fixable at your level. This is where the pros comes in. Unless you are a trained to technician, it’s really just a waste of time and effort for you to fix whatever the problem is on your level.

Problem #3: How to fix Galaxy J3 texting issue: capital letters are inserted randomly when texting, keeps getting intermittent notifications when texting

Hi there. I have two problems with my galaxy J3.  


  • When texting, I keep getting random capital letters in the middle of sentences. I’m using Smart Keyboard Pro.  
  • I get intermittent text notifications. It’s usually during a conversation with someone. Sometimes there’s a notification then I’ll get several texts that arrive silently. I’ve tried deleting apps to see if the latest one has         changed something, but to no avail. I’ve also tried texting to myself. I watch it leave and it arrives silently. That isn’t a conversation. Where’s my text tone gone?? I’ve looked in all the settings I can find, but can find nothing to change.  In hopeful anticipation, thank you.


Solution: For the first issue, try switching to the stock keyboard (Samsung or Google). If both works normally, then ditch the third party one. If the problem persists even when using the stock keyboards, the problem must be related to the second. Try deleting the data of the current messaging app and see what happens. Here’s how it works:

  1. Open Settings app.
  2. Tap Apps.
  3. Tap on More settings at the upper right (three-dot icon).
  4. Select Show system apps.
  5. Find and tap your app.
  6. Tap Storage.
  7. Tap Clear Data button.
  8. Restart your phone and check for the problem.

Deleting data of a messaging app will erase your text messages. Be sure to back important ones first before doing this step.

Using another text messaging app should help in narrowing down the cause. The current app may be buggy so try to utilize the stock messaging app or use another one.

If both suggestions fail to fix the problems, wipe the phone thru factory reset.

  1. Create a backup of your personal data.
  2. Turn off the device.
  3. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  4. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  5. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  6. Press Power button to select.
  7. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  8. Press Power button to select and start the master reset.
  9. When the master reset is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.


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Harvey is keen with mobile technology and loves writing about all things mobile. He is passionate in helping technology-challenged people by finding resolution to their issues.

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