Introduction

This replacement is need if you can't find anything else wrong else wrong with your phone but it still won't work.

Remove the back cover of phone by lifting up on the back cover tab with  the blue plastic opening tool.
  • Remove the back cover of phone by lifting up on the back cover tab with the blue plastic opening tool.

  • Go around the edge of the back cover to completely remove it.

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Remove the old battery by lifting up on  the thumb tab.
  • Remove the old battery by lifting up on the thumb tab.

  • Periodically clean the brass terminals on the battery and the phone. Place a minute amount of ISO on a Q-tip and gingerly clean the connections.

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  • Remove the nine 4mm screws screws from the midframe with a PH000 screw driver

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  • Wedge the blue plastic opening tool in between the front and side panel.

  • Move the blue plastic opening tool around the edges between the front and side panel.

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  • Make sure that you detach the mid-frame from the inside too.

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  • Unhook the ribbon cable clip with the plastic opening tool and remove the audio jack.

Hello: Do i have to buy and or replace the audio jack?? If so is it connected by wires, or do i just unplug the audio jack n rreplace it with a new one????

If i am to just put a new audio jack in, where can i buy one to put in my phone??

Stephen Miller - Reply

  • Use the plastic opening tool to unhook the ribbon cable clip.

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  • Gently pull on the connector with the tweezers until the speaker comes off.

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  • Unhook the other ribbon cable clip to the screen with the blue plastic opening tool

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  • Unhook the ribbon cable clip to the front camera.

  • Lift the motherboard up and out of the device.

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  • Remove the motherboard and unhook the ribbon cable clip to the back camera

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Conclusion

To reassemble your device, follow these instructions in reverse order.

58 other people completed this guide.

Kyle Ruff

Member since: 02/04/2016

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USF Tampa, Team 17-3, Blackwell Winter 2016 Member of USF Tampa, Team 17-3, Blackwell Winter 2016

USFT-BLACKWELL-W16S17G3

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9 Comments

After fixing all the screen, for some reason the LCD was turning on but it showed black and i dont know if is because im missing a screw or because the LCD doesnt work?

Glo - Reply

lol this is likely because you ruined the lcd. this tutorial forgot to mention that it is essential to apply heat, as the midframe is adhered on to the inner component.

connectedcellrepair -

Just need to get a idea on this phone, the silver backing thats usually stuck to the mid frame, when pulling out the old lcd this also came with it.

My question is whether or not that needs to replaced?

Also it changes screens all on its on.

Lisa Yates - Reply

My grand prime 4g board damage

Rakesh - Reply

My grand prime 4g mother board damage

Rakesh - Reply

My said unit was suddenly turned-off. What may possible cause for this problem? Can it be fix?

Felomina Samontiza - Reply

My said unit was suddenly turned-off and it can't turned back as I turn it on back. Can this be fix? What cause this problem?

Felomina Samontiza - Reply

Wont work. I follow all the struction but when i force t open it, it wont work. Still black out .

Roselyn - Reply

where can i buy samsung j7 prime motherboard .?pls advise..thanks

Mels Dongon - Reply

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