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Use this guide to remove the main flex cable assembly including vibration motor and microphone, the loudspeaker and the side button flex cable including the charging port.

Opening the Sony Xperia Z4 will damage the waterproof seals on the device. If you do not replace the adhesive seals, your phone will function normally but will lose its water protection.

Due to the phone’s design, you must remove the lithium-ion battery in order to access the flex cable assemblies. Do not re-use a bent or damaged battery, as doing so is a potential safety hazard.

Before disassembling your phone, discharge the battery below 25%. The battery can catch fire and/or explode if accidentally punctured, but the chances of that happening are much lower if discharged.

You’ll need replacement adhesive to reattach components when reassembling the device.

  1. Before you begin, switch off your phone.
    • Before you begin, switch off your phone.

    • Apply a heated iOpener to the back of the phone to loosen the adhesive beneath the back cover. Apply the iOpener for at least two minutes.

  2. Secure a suction handle to the bottom of the back cover, as close to the edge as possible. Lift the back cover with the suction handle to create a small gap between the cover and the frame. Insert an opening pick into the gap.
    • Secure a suction handle to the bottom of the back cover, as close to the edge as possible.

    • Lift the back cover with the suction handle to create a small gap between the cover and the frame.

    • Insert an opening pick into the gap.

    • If you have trouble, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.

    • Slide the opening pick to the bottom left corner.

  3. Insert a second opening pick and slide it to the bottom right corner  to cut the adhesive. Leave the opening picks in place to prevent the adhesive from resealing.
    • Insert a second opening pick and slide it to the bottom right corner to cut the adhesive.

    • Leave the opening picks in place to prevent the adhesive from resealing.

  4. Insert a third opening pick at the bottom left corner. In the next few steps whilst cutting around the rear camera make sure you only use the tip of the opening pick to avoid smearing the lens or damaging the camera. Start to slide the tip of the opening pick from the bottom left corner along the side of the phone to cut the adhesive.
    • Insert a third opening pick at the bottom left corner.

    • In the next few steps whilst cutting around the rear camera make sure you only use the tip of the opening pick to avoid smearing the lens or damaging the camera.

    • Start to slide the tip of the opening pick from the bottom left corner along the side of the phone to cut the adhesive.

    • Leave the opening pick in its place at the top left corner to prevent the adhesive from resealing.

  5. If the adhesive becomes hard to cut it most likely cooled down. Use your iOpener to reheat it. Insert a fourth opening pick under the top left corner of the back cover.
    • If the adhesive becomes hard to cut it most likely cooled down. Use your iOpener to reheat it.

    • Insert a fourth opening pick under the top left corner of the back cover.

    • Slide the opening pick along the top edge of the phone to cut the adhesive.

    • Leave the opening pick in the top right corner to prevent the adhesive from resealing.

  6. Insert a fifth opening pick at the top right corner of the phone. Slide the opening pick along the right side to cut the remaining adhesive.
    • Insert a fifth opening pick at the top right corner of the phone.

    • Slide the opening pick along the right side to cut the remaining adhesive.

  7. Lift and remove the back cover. After installing the back cover, apply strong, steady pressure to your phone for several minutes to help the adhesive form a good bond, such as by placing it under a stack of heavy books.
    • Lift and remove the back cover.

    • After installing the back cover, apply strong, steady pressure to your phone for several minutes to help the adhesive form a good bond, such as by placing it under a stack of heavy books.

  8. Use a pair of tweezers to carefully peel the adhesive strip off the mother board and the battery and remove it. Use a pair of tweezers to carefully peel the adhesive strip off the mother board and the battery and remove it. Use a pair of tweezers to carefully peel the adhesive strip off the mother board and the battery and remove it.
    • Use a pair of tweezers to carefully peel the adhesive strip off the mother board and the battery and remove it.

  9. Use a pair of tweezers to peel the black adhesive strip off the battery connector and fold it out of the way. Use a pair of tweezers to peel the black adhesive strip off the battery connector and fold it out of the way.
    • Use a pair of tweezers to peel the black adhesive strip off the battery connector and fold it out of the way.

  10. Use a spudger to pry up and disconnect the battery connector. Use a spudger to pry up and disconnect the battery connector.
    • Use a spudger to pry up and disconnect the battery connector.

  11. Use a pair of tweezers and grab the pull tab at the top right corner of the battery. Pull out the adhesive strip with a pair of tweezers. Make sure you pull out the strip in a slow and steady motion and in a flat angle. To prevent the adhesive strip from ripping, it is helpful to twist the strip around the tweezers.
    • Use a pair of tweezers and grab the pull tab at the top right corner of the battery.

    • Pull out the adhesive strip with a pair of tweezers.

    • Make sure you pull out the strip in a slow and steady motion and in a flat angle. To prevent the adhesive strip from ripping, it is helpful to twist the strip around the tweezers.

    • In case one of the adhesive strips rips and it’s not possible to pull it out completely, you can use high isopropyl alcohol (>90%) and/or a heated iOpener to loosen the adhesive. After the adhesive is soft enough use a prying tool such as an opening pick, a plastic/playing card or a spudger to carefully pry out the battery.

  12. Repeat the previous process with the adhesive tab next to the battery flex cable. Repeat the previous process with the adhesive tab next to the battery flex cable. Repeat the previous process with the adhesive tab next to the battery flex cable.
    • Repeat the previous process with the adhesive tab next to the battery flex cable.

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  14. Use an opening pick to pry the battery out of its recess until you can get a good grip. Use an opening pick to pry the battery out of its recess until you can get a good grip.
    • Use an opening pick to pry the battery out of its recess until you can get a good grip.

  15. Remove the battery. Do not reinstall a damaged or deformed battery, as doing so is a potential safety hazard.
    • Remove the battery.

    • Do not reinstall a damaged or deformed battery, as doing so is a potential safety hazard.

    • Remove any remaining adhesive from the midframe, and clean the glued areas with isopropyl alcohol and a lint-free cloth before applying new adhesive.

  16. Remove the Phillips #00 screw (3 mm length).
    • Remove the Phillips #00 screw (3 mm length).

  17. Use a pair of tweezers to peel off and remove the foam pad on top of the daughterboard. Use a pair of tweezers to peel off and remove the foam pad on top of the daughterboard.
    • Use a pair of tweezers to peel off and remove the foam pad on top of the daughterboard.

  18. Use a pair of tweezers to pry up and disconnect the antenna cable. Use a pair of tweezers to pry up and disconnect the antenna cable.
    • Use a pair of tweezers to pry up and disconnect the antenna cable.

  19. Use a spudger to pry up and disconnect the vibration motor connector. Use a spudger to pry up and disconnect the vibration motor connector.
    • Use a spudger to pry up and disconnect the vibration motor connector.

  20. Use the flat end of a spudger to pry up and disconnect the small main flex connector next to the vibration motor connector. Use the flat end of a spudger to pry up and disconnect the small main flex connector next to the vibration motor connector.
    • Use the flat end of a spudger to pry up and disconnect the small main flex connector next to the vibration motor connector.

  21. Lift the daughterboard cover using a pair of tweezers or a spudger by prying it up from its left side. Remove the daughterboard cover carrying the daughterboard. In case you only want to replace the daughterboard you can easily separate it from the plastic cover with an opening pick or a pair of tweezers.
    • Lift the daughterboard cover using a pair of tweezers or a spudger by prying it up from its left side.

    • Remove the daughterboard cover carrying the daughterboard.

    • In case you only want to replace the daughterboard you can easily separate it from the plastic cover with an opening pick or a pair of tweezers.

  22. In case you only want to remove the loudspeaker and/or the left side button flex cable including the charging port and the loudspeaker cover, jump to this step. Use the flat end of a spudger to pry up and disconnect the main flex cable connector.
    • In case you only want to remove the loudspeaker and/or the left side button flex cable including the charging port and the loudspeaker cover, jump to this step.

    • Use the flat end of a spudger to pry up and disconnect the main flex cable connector.

  23. Use the pointed end of a spudger to lever the microphone out of its recess. Use the pointed end of a spudger to lever the microphone out of its recess.
    • Use the pointed end of a spudger to lever the microphone out of its recess.

  24. Use a pair of tweezers to pry up and disconnect the upper connector of the antenna cable. Use a pair of tweezers to pry up and disconnect the upper connector of the antenna cable.
    • Use a pair of tweezers to pry up and disconnect the upper connector of the antenna cable.

  25. Use a spudger to pry up and disconnect the main flex cable from the motherboard. Use a spudger to pry up and disconnect the main flex cable from the motherboard.
    • Use a spudger to pry up and disconnect the main flex cable from the motherboard.

  26. Insert  one arm of the tweezer into the gaps between antenna cable routing and midframe. Loosen the clips along the antenna cable on the right side of the midframe by gently twisting the tweezers sideways until the cable routing pops out of the clips. Loosen the clips along the antenna cable on the right side of the midframe by gently twisting the tweezers sideways until the cable routing pops out of the clips.
    • Insert one arm of the tweezer into the gaps between antenna cable routing and midframe.

    • Loosen the clips along the antenna cable on the right side of the midframe by gently twisting the tweezers sideways until the cable routing pops out of the clips.

  27. Use a pair of tweezers to peel up the main flex cable and separate it from the midframe. In case you're having trouble to separate the main flex cable from the mid frame you can place an iOpener onto the display to loosen the adhesive underneath the flex cable.
    • Use a pair of tweezers to peel up the main flex cable and separate it from the midframe.

    • In case you're having trouble to separate the main flex cable from the mid frame you can place an iOpener onto the display to loosen the adhesive underneath the flex cable.

  28. Use a pair of tweezers to remove the main flex cable assembly including the vibration motor and the microphone. Use a pair of tweezers to remove the main flex cable assembly including the vibration motor and the microphone.
    • Use a pair of tweezers to remove the main flex cable assembly including the vibration motor and the microphone.

  29. Unhook and remove the metal shield above the loudspeaker cover located at the bottom left. Unhook and remove the metal shield above the loudspeaker cover located at the bottom left.
    • Unhook and remove the metal shield above the loudspeaker cover located at the bottom left.

  30. Peel off and remove the foam pad next to the loudspeaker cover. Peel off and remove the foam pad next to the loudspeaker cover.
    • Peel off and remove the foam pad next to the loudspeaker cover.

  31. Also remove the plastic safeguard between the midframe and the loudspeaker cover. Also remove the plastic safeguard between the midframe and the loudspeaker cover.
    • Also remove the plastic safeguard between the midframe and the loudspeaker cover.

  32. Use a pair of tweezers to pry up the loudspeaker cover. Fold the loudspeaker cover upwards until you have enough space to remove the loudspeaker in the next step.
    • Use a pair of tweezers to pry up the loudspeaker cover.

    • Fold the loudspeaker cover upwards until you have enough space to remove the loudspeaker in the next step.

  33. Use a pair of tweezers to lift the loudspeaker out of its recess and remove it. Use a pair of tweezers to lift the loudspeaker out of its recess and remove it.
    • Use a pair of tweezers to lift the loudspeaker out of its recess and remove it.

  34. Use a pair of blunt nose tweezers to grab the flex cable between the charging port and the loudspeaker cover. Carefully pull the charging port out of its housing.
    • Use a pair of blunt nose tweezers to grab the flex cable between the charging port and the loudspeaker cover.

    • Carefully pull the charging port out of its housing.

  35. Use a spudger to pry up and disconnect the side button flex cable on the left side of the motherboard. Use a spudger to pry up and disconnect the side button flex cable on the left side of the motherboard.
    • Use a spudger to pry up and disconnect the side button flex cable on the left side of the motherboard.

  36. Use a pair of tweezers to loosen the plastic clips along the side button flex cable on the left side of the midframe. Use a pair of tweezers to loosen the plastic clips along the side button flex cable on the left side of the midframe. Use a pair of tweezers to loosen the plastic clips along the side button flex cable on the left side of the midframe.
    • Use a pair of tweezers to loosen the plastic clips along the side button flex cable on the left side of the midframe.

  37. Peel up the side button flex cable and separate it from the midframe. In case you're having trouble separating the side button flex cable from the midframe you can place an iOpener onto the display to loosen the adhesive underneath the flex cable. Remove the side button flex cable including the loudspeaker cover and the charging port.
    • Peel up the side button flex cable and separate it from the midframe.

    • In case you're having trouble separating the side button flex cable from the midframe you can place an iOpener onto the display to loosen the adhesive underneath the flex cable.

    • Remove the side button flex cable including the loudspeaker cover and the charging port.

Conclusión

If possible, turn on your phone and test your repair before installing new adhesive and resealing the phone.

Secure the new battery with pre-cut adhesive or double-sided adhesive tape. In order to position it correctly, apply the new adhesive into the phone at the places where the old adhesive was located, not directly onto the battery. Press the new battery firmly into place.

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

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Check out our Answers community for troubleshooting help.

Dominik Schnabelrauch

Miembro Desde 23/11/16

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