How to fix Galaxy J7 with apps crashing issue after installing an update

Do you have problems with your apps after upgrading your #GalaxyJ7? If you do, make sure to follow our recommendations for Leo below. Leo said that some apps in his J7 started acting app following an installation of Android update. If you have such problems, our solutions below may help.

Problem #1:  What to do Galaxy J7 that can’t sign in to wifi after after factory reset

I performed a factory reset on my J7.  when the welcome screen came up i touched next and then it said: An unauthorized attempt has been made to reset your device to factory default settings. connect to a wi-fi or mobile network to verify your identity.  I touch ok then the wi-fi screen comes up so i can sign into wi-fi. However it will not let me, it says turning on…and there is a spinning circle (like when something is buffering). i have left it on for hours and nothing.  I cannot click next. I have tried re doing the factory reset a couple times and it still has the same problem. I even talked to someone through my carrier and he kept telling me to click next and i told him many times i cant, it will not let me.  I finally gave up on him because he wasn’t much help. Hopefully you can help me. — Sandy

Solution: Hi Sandy. At this point, there’s nothing that we can do. This is definitely not a normal behavior of a Samsung device coming from a factory reset. There may be a software glitch preventing the setup to be completed properly.

To see if the bug is caused by the last wifi network it connected to, do another round of factory reset outside your home so your J7 won’t automatically connect to your home wifi. You can do this trick in your friend’s place or in a public space that has an available wifi network. If your J7 will continue to behave like what’s it’s doing right now, you’re out of luck. Since you won’t be able to set the phone up normally this way, the only possible solution that you can try is to flash a stock firmware to your device.


If you haven’t heard of flashing before or if you’re not confident to do it, you can try to bring your device to Samsung so they can do it for you.

Flashing is a risky procedure that can brick your phone for good if not done correctly. If you intend on flashing your J7 on your own, be sure to follow a good flashing guide for your phone model. Also, make sure that you use the correct firmware. Not doing so is the fastest way of causing more problems than what you have now.

Problem #2: How to fix Galaxy J7 with apps crashing issue after installing an update

The problems happened after an update, in May 2018. Some apps already installed, like the gallery, chrome, play store, Samsung notes, camera, internet browser and the clock have some problems. They all close without warning or error message a few seconds after being launched. For chrome and Samsung internet browser, these apps close after downloading any file (picture, sound, video, pdf ) but otherwise they work well. For the other apps , they close after à short time or after trying To load, open or save a file. And also or la impossible To take screenshots, the picture don’t sage and there is no notification saying the capture sais à success. I’ll be very thankful if you could solve this problem. — Leo

Solution: Hi Leo. If your J7 worked normally before install an update, the reasons why your apps may no longer be working properly must be software in nature. It can be an app or operating system bug, or a coding issue with the current Android OS.

To fix the problem, here are the stuff that you can try:

Clear cache partition

System updates can sometimes corrupt the system cache, causing performance and all sorts of issues with apps. Because it’s possible that this is what’s happening with your J7 after an update, you want to ensure that you refresh the system cache, which is stored in the cache partition.

To wipe the cache partition of your J7:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  3. When the device logo screen displays, release only the Power key
  4. When the 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 key to highlight ‘wipe cache partition.’
  6. Press the Power key to select.
  7. Press the Volume down key to highlight ‘yes’ and press the Power key to select.
  8. When the wipe cache partition is complete, ‘Reboot system now’ is highlighted.
  9. Press the Power key to restart the device.

Install app updates

Many Android users believe that installing a new system update takes care of everything else. Unfortunately, that’s now how it works. Apps, another component in a good running smartphone, may remain in their old version after a system update. This can lead to problems because apps that may not be optimized for newer Android version may suddenly find themselves incompatible, which in turn can result to troubles. This is true for those who turned off Play Store app automatic updates. If you did, make sure to check Play Store apps for updates to your apps. If you install apps outside of the Play Store, make sure that all your apps are compatible with the current Android version on your device.

Observe in safe mode

While lack of updates can sometimes cause problems after an update, it’s a totally different story when the cause of unexplained Android issue is due to a bad app itself. To see if an app is causing your issues at this time, you can restart your J7 to safe mode. In this mode, all of your third party apps will be blocked from running so if the problem won’t happen, you know you have a bad app at hand.

To restart your device to safe mode:

  1. Turn the device off.
  2. Press and hold the Power key past the screen with the device name.
  3. When ‘SAMSUNG’ appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. Safe mode will display in the bottom left corner of the screen.
  7. Release the Volume down key when you see ‘Safe Mode’.

If you think that there’s an app issue, you can try to identify it by following these steps:

  1. Boot to safe mode.
  2. Check for the problem.
  3. Once you’ve confirmed that a third party app is to blame, you can start uninstalling apps individually. We suggest that you begin with the most recent ones you added.
  4. After you uninstall one app, restart the phone to normal mode and check for the problem.
  5. If your Galaxy J7 remain problematic, repeat steps 1-4. Continue doing this until you’ve isolated the culprit.

Master reset

Some post-update apps are only fixed by doing a factory reset so if all our first three suggestions above won’t help at all, don’t hesitate to wipe the phone and return all its settings to defaults. Factory reset will, of course, also delete your personal data so be sure to back them up before doing it.

To master reset your J7:

  1. Back up data on the internal memory. If you have signed into a Google account on the device, you have activated Anti-theft and will need your Google credentials to finish the Master reset.
  2. Turn off the device.
  3. Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  4. When the device logo screen displays, release only the Power key
  5. When the Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  6. Press the Volume down key several times key to highlight ‘wipe data / factory reset.’
  7. Press Power button to select.
  8. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  9. Press Power button to select and start the master reset.
  10. When the master reset is complete, ‘Reboot system now’ is highlighted.
  11. Press the Power key to restart the device.

Problem #3: What to do if you have a water damaged Galaxy J7

Hello, my Samsung Galaxy J7 submerged completely in water. I was in a rush and I forgot to put it in rice, I will be gone for 6 hours. I dried it as much as i could and it was doing fine until a couple minutes later it began glitching and completely shut off.  It wont turn on, I even tried taking out the battery and putting it in again but it wouldn’t work. What should I do? Thanks! — Nourrihani123

Solution: Hi Nourrihani123. Exposing your device to water or dunking it in a pool is one of the quickest way to kill a non-water resistant phone like your J7. If your phone no longer turns back on at this time, that can be an indicator that one or some of its hardware components may now be damaged. Drying your device by whatever means won’t fix a physically broken component. Putting a wet device in a bag of rice for 6 hours is not even enough to fully allow rice to absorb the water and moisture in the device. And of course, it may already be too late.

Electronics and water don’t mix. Ideally, you should follow a set of steps to prevent damaging the system further by taking the battery out, dismantling the phone, and drying it completely using a special drying tool or leaving it in a bag of rice for several days. These are “first aid” that you can do to your phone right after taking it out of the water. Leaving the battery connected to a wet motherboard is a death sentence. Right now, we think your device has a permanently damaged motherboard so there’s probably nothing much that you can do about it.

We suggest that you let a professional check the phone so they can tell you if it can still be repaired or not.