Samsung Galaxy J7 Troubleshooting
If you are having problems with your Samsung Galaxy J7, use this resource to troubleshoot problems.
Screen keeps flickering on and off.
Incorrect Display Setting
Your phone settings may need to be updated. To update your phone, navigate from home screen to the settings tab. Select display. Select update.
Your phone has water damage. Water damages electronic components and may have damaged the display cable. To repair the display of your device, go to the screen replacement guide.
Flex Cable or Connectors may be Loose
Your phone may have been dropped. When the phone is dropped a lot, the flex cable may have come loose.
Device Won't Turn On
Your device won't turn on. The screen is black.
Battery has No Charge
Your battery has run out of power. Plug in the phone to charge it.
Battery is Loose
Your battery is loose. Replace the battery. To replace the battery, go to the blank guide.
Device’s Screen is Unresponsive
The screen does not turn on when the device power button is pressed.
Your phone was more than likely dropped to cause this issue. In order to fix this you can either contact Samsung or stores near you for help with replacement of the screen. Another idea to fix your device’s screen is to purchase a new panel that corresponds with this phone. To replace the screen go to the screen replacement guide.
Screen is Not Connected to Motherboard
Your screens connector for the screen to the motherboard may have gotten loose. In order to fix this you can either contact Samsung or stores near you for help with replacement. Another alternative is you need to open the phone and reconnect the screen to the motherboard. To replace the screen go to the screen replacement guide.
Device Will Not Power On
The screen remains black when powered on and there are no indicator lights lit up.
Charge Your Device
Your device may be out of battery. Using an approved charger, plug your device in and allow to charge for 15 minutes. If device does not turn on after pressing power button for 15 seconds attempts to replace charger or charging port can be made.
Debris Buildup in Ports
Dust may have gathered inside your charging port or charger. To solve this issue try to blow into the entrances of your charging port and charger.
Battery or Other Piece of Hardware is Loose
Over time or with other people using your device something might have gotten loose. Please open up your device using the appropriate tools and tighten all connections to hardware.
Device’s audio is distorted
The sound coming from the device is messed up, distorted, or not working
The device thinks it is in headphone mode
Try plugging in headphone in the headphone jack a few time. Sometimes the device tricks itself that it is in headphone mode, and this will update the phone so it is not in headphone mode.
The device is wet
Try leaving the device out on a table, come back in 24 hours, then check if the audio works. This will allow the device to dry.
The device’s speakers are broken
Replace the speakers inside the phone. Open the back of the phone, remove the battery, remove all ten screws using a phillips screwdriver. Take out the speakers, and install the new speaker.
Home Button Not Responding
Home button either will not depress or does not appear to perform any action on the screen.
The home button has become physically dislodged or looks to be off-kilter.
Button Stuck In Place
In some cases, the button can become dirty or filled with gunk and can cause it to become stuck and not work anymore.
One of the cables that connects the home button to the motherboard has become disconnected and needs to be attached again to work. If the device has gotten wet this can cause the cables to become damaged as well.
Volume Buttons Not Responding
Volume button will not push down or does not cause the volume to decrease.
Dislodged Volume Keys
The volume button has become physically dislodged or looks to be off-kilter.
Button Stuck In Place
Depending on the environment they are used, the volume keys can become dirty or filled with gunk and can cause it to become stuck and not work anymore.
The cable that connect the volume keys to the motherboard has become disconnected and needs to be attached again to work. If the device has gotten wet this can cause the switches or cable to become damaged as well.