Samsung Galaxy S4 User manual

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Samsung Galaxy S4 Display
Assembly Replacement
INTRODUCTION
Use this guide along with the Werx Repair Mat to replace the cracked or broken
screen on your Samsung Galaxy S4.
Use this guide to replace the display assembly.
TOOLS:
IMPORTANT
Take your time! The repair takes about 20-30 minutes.
Remember that you will be handling fragile parts, so be gentle!
Most screws are different sizes so keep them organized.
Werx Repair Mat

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Step 1: Rear Case
• Before disassembling your phone, be
sure it is powered off.
• Insert a fingernail or a plastic opening
tool into the divot to the left of the rear-
facing camera.
• Gently pry and twist the flexible rear
cover off the back of the phone.
Step 2: Battery
• Insert a fingernail or plastic opening
tool into the recess in the bottom right
corner of the battery and lift upward.
• Remove the battery away from the
phone.

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Step 3: Midframe
• Use the Werx Repair Mat to keep
screws organized
• Remove the nine 4.0 mm Phillips
screws securing the midframe to the
display assembly.
Step 4:
• The midframe is secured to the display
assembly by several plastic clips
behind the chrome bezel of the
midframe.
• Insert a plastic opening tool between
the chrome bezel around the display
glass and the larger chrome border
piece.

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Step 5:
• Pry around the corner, to the power
button side.
Step 6:
• Remove the midframe from the display
assembly.

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Step 7:
• Remove the single 2.4 mm Phillips
screw from the motherboard.
Step 8:
• Disconnect the display/digitizer cable
connector.

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Step 9:
• Disconnect the headphone jack
assembly cable connector.
Step 10:
• Disconnect the front-facing camera
cable connector.

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Step 11:
• Disconnect the earpiece speaker
assembly cable connector.
Step 12:
• Disconnect the USB board connector.

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Step 13:
• Disconnect the coax signal antenna
cable connector.
Step 14:
• Disconnect the WiFi antenna cable
connector.

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Step 15:
• Gently remove the motherboard.
• Hold the motherboard by its edges to
prevent ESD damage. Be casrefull not
to snag it on any cables as you extract
it from the display assembly.
Step 16:
• Use the heat gun at the lowest setting
to heat the frame/border of the phone.
When using the heat gun, be careful
not to leave it heating in one area for
too long. Constantly move the heat gun
when using it.

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Step 17:
• Insert the metal spudger underneath
the midframe and the front glass.
• Slide the metal spudger down releasing
the adhesive as you go.
Step 18:
• Slide the metal spudger across the top
edge of the display to separate
adhesive.
• Pull up slightly as you getting close to
the home button, work your way around
while sliding the metal spudger.

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Step 19:
• Insert the metal spudger on the bottom
left side underneath the glass and work
your way to the top of the phone
releasing the adhesive as you go.
Step 20:
• Safely remove the front panel assembly
from phone.

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Step 21:
• Use a pair of tweezers to remove any
glass or adhesive left in the frame of
the phone.
Step 22:
• Use the air blower to remove lint and
dust particles.

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Step 23:
• Remove the protective plastic from the
back of the new LCD assembly.
Step 24:
• Insert the LCD to the front panel
assembly.
• Carefully straighten the LCD cable, and
feed them through the slot cut in the
outer case

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Step 25:
• Run your fingers along the sides being
sure the assembly slips evenly into the
frame.
Step 26:
• Carefully insert the motherboard to the
frame of the phone.

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Step 27:
• Reconnect the following cable to the
motherboard:
o USB board cable
o Front-facing camera cable
o Earpiece speaker assembly cable
o Coax antenna cable
o WiFi antenna cable
o Display/digitizer cable
o Headphone jack assembly cable
Step 28:
• Insert one Phillips screw to the
motherboard.

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Step 29: Midframe
• Insert the midframe to the display
assembly.
Step 30:
• Insert the nine Phillips screws to secure
the midframe to the display assembly.
• Insert the Sim and micro-sd card

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Step 31: Battery
• Insert the battery making sure there is a
proper connection.
Step 32:
• Insert the rear cover and run your
fingers along the sides being sure it
snaps into place.