How to fix Galaxy J7 (2017) wifi won’t turn on issue

This troubleshooting article will cover issues for the Galaxy J7 (2017). If you are a Galaxy J7 (2017) user and it has a wifi issue described below, be sure to follow our solutions.

Problem: Galaxy J7 (2017) won’t fast charge, wifi not turning on

I have a samsung galaxy j7 2017 and i am having several problems.

  • Slow charging issue by last 15 days actually. my phone is takes 6 to 7 hours to complete charge. earlier it was taking 1h 30 min max to full charge. a slow charging pop up is displayed on the taskbar above and it’s taking more time to charge.
  • my wifi, hotspot and bluetooth even not getting turn on. in wifi just wifi button just greyed up and not getting turn on.

What to do? please help me. i am exhausted by my phone please please help me.

Solution: We can’t say for sure if the two issues are caused by the same bug so if the troubleshooting solutions for each of them below won’t work, you should consider wiping the phone thru factory reset to know. That’s for later though. In the meantime, let’s divide the set of troubleshooting steps for each of the problems.

How to troubleshoot slow charging issue on Galaxy J7 (2017)

Slow charging issue can happen due to a number of things. Here’s what you can do to know how to fix this problem.

Check if fast charging is enabled

This is basic but an important step. Some users may complain that their phone has stopped fast charging after forgetting that they disabled the feature off. Make sure that this is not your case. To check:

  1. Open Settings app.
  2. Tap Device management.
  3. Tap Battery.
  4. Tap More settings (upper right)
  5. Tap Advanced settings.
  6. Enable fast cable charging.
  7. Restart your device and check for the problem.

Use another charging cable and/or adapter

If your Galaxy J7 (2017) device has stopped fast charging all of a sudden, it’s possible that the cable or adapter may be to blame. Make sure to try a different set of charging accessories to know. If possible, use official Samsung accessories to avoid problems. If you can’t readily secure a known working set, visit your local Samsung store and use their accessories.

Check the port

Sometimes, dirt or foreign object may block the charging cable when charging. Try cleaning the port with a can of compressed air if you think it’s dirty. Do not insert anything inside to avoid damaging the system.

Calibrate battery and OS

Sometimes, Android may lose track of the actual battery levels. To recalibrate the operating system so that it gets accurate battery level readings, do the following:

  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 device 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. Restart the device.
  5. Use your phone until it completely runs out of power again.
  6. Repeat steps 1-5.

Observe in safe mode

One of the causes that we should look into is the possibility that a bad third party app may be causing the battery or Android to not work properly. What you need to do is to let your phone run on safe mode for a few days to notice if there’s any difference.

To boot your device to safe mode:

  1. Turn the device off.
  2. Press and hold the Power key past the model name screen.
  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.
  8. Check for the problem.

If fast charging appears to work properly on safe mode but not on normal mode, that means a third party app is causing it. To identify which of your apps is causing the trouble, you should boot the phone back to safe mode and follow 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 an app, restart the phone to normal mode and check for the problem.
  5. If your device still won’t fast charge, repeat steps 1-4.

Reset app preferences

Another good way to solve this problem is by making sure that you set all apps back to their known working state. This is done by resetting all apps back to their original configuration. Here’s how:

  1. Open Settings app.
  2. Tap Apps.
  3. Tap More settings (three-dot) icon at the upper right.
  4. Tap Reset app preferences.

Reset all settings

Sometimes, bugs may occur if there’s a misconfigured system setting. Try to see what happens after resetting all settings on your device. The effects should be similar to factory reset but without the need to delete apps and user data.

  1. From the Home screen, swipe up on an empty spot to open the Apps tray.
  2. Tap Settings > General Management > Reset > Reset settings.
  4. If you have set up a PIN, enter it.
  6. The device will restart to perform the reset of settings.

How to troubleshoot wifi won’t turn on issue on Galaxy J7 (2017)

There’s no direct way to know why wifi and other network functions (mobile data and Bluetooth) stopped working. We suspect it may be an app issue so be sure to include that in your troubleshooting. Since we’ve already given the details on how to perform important software troubleshooting procedures above, all we need to tell you now are the specific troubleshooting steps.

To fix network issues on your Galaxy J7, you must try the following:

  • Clear the cache partition
  • Reset network settings
  • Reseat (disconnect and reconnect) the SIM card
  • Reset all settings
  • Factory reset

Here’s how to factory reset your Galaxy J7 (2017):

  1. Back up data on the internal memory. If you have signed into a Samsung account on the device, you have activated Anti-theft and will need your Samsung credentials to finish the master reset.
  2. From the Home screen, swipe up on an empty spot to open the Apps tray.
  3. Tap Settings > Cloud and accounts > Backup and restore.
  4. Tap the following sliders to desired setting:
  5. Back up my data
  6. Automatic restore
  7. Tap the Back key (bottom right) until you reach the main Settings menu.
  8. Tap General Management > Reset > Factory data reset.
  9. Scroll to the bottom of the screen, then tap RESET > DELETE ALL.
  10. If you have screen lock turned on, enter your credentials.
  11. If prompted to verify your Samsung account, enter the password, then tap CONFIRM.
  12. Wait for the device to reset.

Get Samsung support

If the cause of the problems is one and software-related, factory reset will most likely help. However, in the event that nothing changes after wiping the phone, we suggest that you let Samsung check the hardware.


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