Difficulty

Moderate

Steps

20

Time Required

                          30 - 40 minutes

Sections

3

  • Opening
  • 7 steps
  • Xiaomi Redmi Note 7 Battery Disconnect
  • 3 steps
  • Fingerprint Sensor
  • 10 steps

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0

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Introduction

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

What you need

Step 1

              Loosen the rear glass adhesive
  • Apply a heated iOpener to the rear glass to loosen the adhesive underneath. Apply the iOpener for at least two minutes.

Apply a heated iOpener to the rear glass to loosen the adhesive underneath. Apply the iOpener for at least two minutes.

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Step 2

              Insert an opening pick
  • Secure a suction handle to the bottom edge of the rear glass, as close to the edge as possible.
  • If your rear glass is badly cracked, covering it with a layer of clear packing tape may allow the suction cup to adhere. Alternatively, very strong tape may be used instead of the suction cup. If all else fails, you can superglue the suction cup to the rear glass.
  • Lift the rear glass with the suction handle to create a small gap between the glass and the frame.
  • In case you have trouble creating a gap, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.
  • Insert an opening pick into the gap.
  • Slide the opening pick to the bottom right corner to slice the adhesive.

Secure a suction handle to the bottom edge of the rear glass, as close to the edge as possible.

If your rear glass is badly cracked, covering it with a layer of clear packing tape may allow the suction cup to adhere. Alternatively, very strong tape may be used instead of the suction cup. If all else fails, you can superglue the suction cup to the rear glass.

Lift the rear glass with the suction handle to create a small gap between the glass and the frame.

In case you have trouble creating a gap, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.

Insert an opening pick into the gap.

Slide the opening pick to the bottom right corner to slice the adhesive.

Step 3

              Slice the bottom edge adhesive
  • Insert a second opening pick and slide it to the bottom left corner to slice 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 left corner to slice the adhesive.

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

Step 4

              Slice the lefthand-side adhesive
  • If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener to reheat it.
  • Insert a third opening pick at the bottom left corner.
  • Slide the opening pick along the left edge of the phone to slice the rear glass adhesive.
  • Leave the opening pick in its place at the top left corner to prevent the adhesive from resealing.

If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener to reheat it.

Insert a third opening pick at the bottom left corner.

Slide the opening pick along the left edge of the phone to slice the rear glass adhesive.

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

Step 5

              Slice the top edge adhesive
  • Insert a fourth opening pick under the top left corner of the rear glass.
  • Slide the opening pick along the top edge of the phone to slice the rear glass adhesive.
  • Leave the opening pick in the top right corner to prevent the adhesive from resealing.

Insert a fourth opening pick under the top left corner of the rear glass.

Slide the opening pick along the top edge of the phone to slice the rear glass adhesive.

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

Step 6

              Slice the righthand-side adhesive
  • Insert a fifth opening pick at the top right corner of the phone.
  • Slide the opening pick along the right edge to slice the remaining adhesive.
  • Don’t try to remove the rear glass all the way yet. The fingerprint sensor is still connected to the motherboard.

Insert a fifth opening pick at the top right corner of the phone.

Slide the opening pick along the right edge to slice the remaining adhesive.

Don’t try to remove the rear glass all the way yet. The fingerprint sensor is still connected to the motherboard.

Step 7

              Open up the phone assembly
  • Carefully fold the rear glass to the left side of the phone assembly like you’d open the front cover of a book.
  • Avoid tensioning the fingerprint flex cable during this process.

Carefully fold the rear glass to the left side of the phone assembly like you’d open the front cover of a book.

Avoid tensioning the fingerprint flex cable during this process.

Step 8

              Unfasten the screws
  • Use a Phillips screw driver to remove the three 3.3 mm-long screws securing the connector cover to the midframe.

Use a Phillips screw driver to remove the three 3.3 mm-long screws securing the connector cover to the midframe.

Step 9

              Remove the connector cover
  • Use a pair of tweezers to remove the connector cover.

Use a pair of tweezers to remove the connector cover.

Step 10

              Disconnect the battery
  • Use the flat end of a spudger to pry up and disconnect the battery flex cable from the motherboard.

Use the flat end of a spudger to pry up and disconnect the battery flex cable from the motherboard.

Step 11

              Unfasten the screws
  • Use a Phillips screw driver to remove the seven 3.4 mm-long screws securing the motherboard cover.

Use a Phillips screw driver to remove the seven 3.4 mm-long screws securing the motherboard cover.

Step 12

              Pry up the motherboard cover
  • Insert an opening pick into the gap between the top right corner of the motherboard cover and the midframe.
  • Use the opening pick to unhinge the plastic clips of the motherboard cover and pry it up.

Insert an opening pick into the gap between the top right corner of the motherboard cover and the midframe.

Use the opening pick to unhinge the plastic clips of the motherboard cover and pry it up.

Step 13

  • Insert an opening pick into the gap between the top left corner of the motherboard cover and the midframe.
  • Use the opening pick to unhinge the plastic clips of the motherboard cover and pry it up.

Insert an opening pick into the gap between the top left corner of the motherboard cover and the midframe.

Step 14

              Pry up the motherboard cover
  • Insert an opening pick in the gap between the top edge of motherboard cover and the midframe.
  • Use the opening pick to unhinge the remaining plastic clips at the top edge of the motherboard cover.
  • Pry up the motherboard cover.

Insert an opening pick in the gap between the top edge of motherboard cover and the midframe.

Use the opening pick to unhinge the remaining plastic clips at the top edge of the motherboard cover.

Pry up the motherboard cover.

Step 15

              Remove the motherboard cover
  • Remove the motherboard cover by pulling it in the direction of the top edge of the phone.

Remove the motherboard cover by pulling it in the direction of the top edge of the phone.

Step 16

              Disconnect the fingerprint sensor
  • Use the flat end of a spudger to pry up and disconnect the fingerprint sensor flex cable.

Use the flat end of a spudger to pry up and disconnect the fingerprint sensor flex cable.

Step 17

              Loosen the fingerprint adhesive
  • Heat an iOpener and apply it to the rear glass where the finger print sensor is located to soften the adhesive. Apply the iOpener for at least two minutes.

Heat an iOpener and apply it to the rear glass where the finger print sensor is located to soften the adhesive. Apply the iOpener for at least two minutes.

Step 18

              Slice the fingerprint adhesive
  • Carefully slide an opening pick underneath the short orange flex cable with the ZIF connector on top to separate it from the rear glass.

Carefully slide an opening pick underneath the short orange flex cable with the ZIF connector on top to separate it from the rear glass.

Step 19

  • Slide the tip of an opening pick underneath the edge of the fingerprint sensor.
  • Use the opening pick to pry up the fingerprint sensor.

Slide the tip of an opening pick underneath the edge of the fingerprint sensor.

Use the opening pick to pry up the fingerprint sensor.

Step 20

              Remove the fingerprint sensor assembly
  • Use a pair of tweezers to remove the fingerprint sensor assembly.

Use a pair of tweezers to remove the fingerprint sensor assembly.

To reassemble your device, follow these instructions in reverse order. Apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

Secure the rear glass and the fingerprint sensor with pre-cut adhesive or double-sided adhesive tape during reassembly.

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

Removal didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

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                    Dominik Schnabelrauch

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