Introduction

This guide will provide instructions on how to replace a cracked or damaged LCD screen and digitizer assembly on your Samsung Galaxy S4 Mini.

Keep press the END key to turn off the phone (if turned on).
  • Keep press the END key to turn off the phone (if turned on).

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Pull out the back cover of the cell phone with the help of a plastic opening tool.
  • Pull out the back cover of the cell phone with the help of a plastic opening tool.

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Pull up the battery.
  • Pull up the battery.

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Remove the old SIM Card by sliding it towards the bottom of the device. Remove the old SIM Card by sliding it towards the bottom of the device.
  • Remove the old SIM Card by sliding it towards the bottom of the device.

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Using your fingernail push through the hole at the top of the memory card holder, so it can be slid out.
  • Using your fingernail push through the hole at the top of the memory card holder, so it can be slid out.

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Remove the 10 4.0 mm Phillips screws on the back of the phone using the #00 Phillips screwdriver.
  • Remove the 10 4.0 mm Phillips screws on the back of the phone using the #00 Phillips screwdriver.

  • Not needed, but Tweezers can be helpful in removing the screws from their holes, as their size makes removal a tad difficult.

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Starting at the USB port, slide a plastic tool around the perimeter of the phone between the rear housing and frame.  As you work your way around the edge you will feel the clips release.
  • Starting at the USB port, slide a plastic tool around the perimeter of the phone between the rear housing and frame. As you work your way around the edge you will feel the clips release.

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Carefully separate the rear housing and the mid-frame to reveal the inside of the phone.
  • Carefully separate the rear housing and the mid-frame to reveal the inside of the phone.

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Remove the 2 flex cables shown that attach to the USB board, Tweezers can be especially helpful here.
  • Remove the 2 flex cables shown that attach to the USB board, Tweezers can be especially helpful here.

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Gently pry underneath the charging port using the plastic opening tool to separate it from the double sided tape below.
  • Gently pry underneath the charging port using the plastic opening tool to separate it from the double sided tape below.

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Once its released, gently lift the main board and remove the USB board containing the charging port.
  • Once its released, gently lift the main board and remove the USB board containing the charging port.

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Use the flat end of a nylon spudger to lift the headphone jack press-fit connector up to release the ribbon cable. Use the flat end of a nylon spudger to lift the headphone jack press-fit connector up to release the ribbon cable.
  • Use the flat end of a nylon spudger to lift the headphone jack press-fit connector up to release the ribbon cable.

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Use the flat end of a nylon spudger to lift the infrared sensor press-fit connector up to release the ribbon cable. Use the flat end of a nylon spudger to lift the infrared sensor press-fit connector up to release the ribbon cable.
  • Use the flat end of a nylon spudger to lift the infrared sensor press-fit connector up to release the ribbon cable.

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Use the flat end of a nylon spudger to lift the front-facing camera press-fit connector up to release the ribbon cable. Use the flat end of a nylon spudger to lift the front-facing camera press-fit connector up to release the ribbon cable.
  • Use the flat end of a nylon spudger to lift the front-facing camera press-fit connector up to release the ribbon cable.

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Gently lift the motherboard up and partially away from the device. The digitizer ribbon cable is still attached to the underside of the motherboard. The digitizer ribbon cable is still attached to the underside of the motherboard.
  • Gently lift the motherboard up and partially away from the device.

  • The digitizer ribbon cable is still attached to the underside of the motherboard.

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Put the flat end of a nylon spudger under the lip of the digitizer press-fit connector and lift up to release the connector and free the motherboard. Put the flat end of a nylon spudger under the lip of the digitizer press-fit connector and lift up to release the connector and free the motherboard.
  • Put the flat end of a nylon spudger under the lip of the digitizer press-fit connector and lift up to release the connector and free the motherboard.

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  • Use a heat gun or an iOpener to soften the adhesive underneath the perimeter of the screen.

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  • Use a suction cup to pull the screen away from the frame and create a small gap.

  • This should not require excessive force. Apply additional heat as needed to soften the screen adhesive.

    • Severe cracks or screen damage may prevent a suction cup from obtaining a complete seal. The Galaxy S4 Mini has enough of a gap between the frame and the screen to insert a jimmy or plastic opening pick. Carefully apply heat as needed and wedge either tool into the gap; work your way around the edge of the screen to free it from the adhesive.

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Insert a plastic opening pick into the gap between the screen and the plastic housing. Slide the plastic opening pick along the edge of the screen to free the screen from the adhesive. Slide the plastic opening pick along the edge of the screen to free the screen from the adhesive.
  • Insert a plastic opening pick into the gap between the screen and the plastic housing.

  • Slide the plastic opening pick along the edge of the screen to free the screen from the adhesive.

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Remove the LCD screen and digitizer assembly completely. Feed the digitizer ribbon cable gently through the frame. Feed the digitizer ribbon cable gently through the frame.
  • Remove the LCD screen and digitizer assembly completely.

  • Feed the digitizer ribbon cable gently through the frame.

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Conclusion

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

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Richard Suovanen

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