How To Fix Samsung Galaxy J7 Will Not Connect To Mobile Network

Welcome to another installment of our troubleshooting series where we aim to help our readers who own the #Samsung #Galaxy #J7 fix the issues that they are experiencing with their phone. This is one of the best performing mid range Android devices available in the market which has several outstanding features. Although this is a solid performing device there are instances when certain issues can occur which we will be addressing today. In this latest installment of our troubleshooting series we will tackle the Galaxy J7 will not connect to mobile network issue.

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How To Fix Samsung Galaxy J7 Will Not Connect To Mobile Network

Problem: Hi I have a Samsung J7  which I have had for 3 months. I turned my phone off and the next day when I turned it back on it would not connect to the mobile network. I have gotten a new SIM card, factory reset, and cleared the cache but the phone still will not connect to the mobile network. When the phone is turned off and then turned back on text messages and voicemails will come through. I have talked to Straight talk and they said the phone has gone bad, is that even possible? The phone has never been dropped in water, has only been dropped on the ground once and that was a week after I bought it. The phone will connect to WIFI and works just fine, Can you please help?

Solution: Before performing any troubleshooting steps on this phone it’s best to make sure that it is running on the latest software version. If an update is available then I suggest that you download and install it first.


What we will be doing right now is to check if the problem is caused by a software glitch by performing the troubleshooting steps listed below.

Perform a soft reset

The first thing you will need to do in this case is a soft reset. This will usually resolve issues caused by minor software glitches as the phone software will be refreshed.

  • Press and hold the Power and Volume down key for up to 45 seconds.
  • Wait as the device restarts.

Check if the phone can connect to the mobile network.

Try using a different SIM card

To eliminate the possibility of this problem being caused by a faulty SIM card you should try using a different SIM card in your phone. You should also make sure that you are in an area with a strong network signal.

Check if the issue occurs in Safe Mode

There are instances when an app you downloaded can cause this particular issue. To check if this is the case you will have to start the phone in Safe Mode as only the pre-installed apps are allowed to run in this mode.

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

If the issue does not occur in this mode then it could be caused by an app you downloaded. Find out what app this is and uninstall it.

Wipe the cache partition

There are instances when a corrupted system cached data can cause this problem. It’s therefore a good idea to delete this data as the phone will just rebuild this data when it starts again.

  • Turn off the phone.
  • Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  • When the device logo screen displays, release only the Power key
  • 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).
  • Press the Volume down key several times key to highlight ‘wipe cache partition.’
  • Press the Power key to select.
  • Press the Volume down key to highlight ‘yes’ and press the Power key to select.
  • When the wipe cache partition is complete, ‘Reboot system now’ is highlighted.
  • Press the Power key to restart the device.

Check if the issue still occurs.

Perform a factory reset

One last troubleshooting step to consider is a factory reset. This will bring your phone back to its original factory condition. Take note that your phone data will be deleted in the process so make sure to create a backup copy before proceeding.

  • Turn off the phone.
  • Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  • When the device logo screen displays, release only the Power key
  • 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).
  • Press the Volume down key several times key to highlight ‘wipe data / factory reset.’
  • Press Power button to select.
  • Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  • Press Power button to select and start the master reset.
  • When the master reset is complete, ‘Reboot system now’ is highlighted.
  • Press the Power key to restart the device.
  • With no apps installed in the phone, try to check if the issue still occurs.

If the above steps doesn’t fix the problem then you will need to bring the phone to a service center and have it checked as this could already be caused by a faulty hardware component.

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