Xiaomi Redmi Note 7 Screen And Metal Case Replacement Repair Guide

Difficulty

Moderate

Steps

Time Required

                          1 - 2 hours

Sections

Opening
7 steps
Screen and Metal case
13 steps

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Introduction

This is a good opportunity to swap to a new battery since you are already changing the complete case. If you want to use your old battery please use an adhesive removal solution otherwise you risk to permanently damage the battery.

WARNING! Never use a battery that has sign of wearing or has been punched, this could lead to an explosion or destruction of your phone.

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

              Removing cable protecting plates

Locate the screws of the protective metal plate placed on the connector on the left and on the two connectors on the right
As shown use a philips screwdriver to remove the highlited screws
Then remove the metal plates with a pair of tweezers or with your finger.

Locate the screws of the protective metal plate placed on the connector on the left and on the two connectors on the right

As shown use a philips screwdriver to remove the highlited screws

Then remove the metal plates with a pair of tweezers or with your finger.

Step 9

              Unplugging the ribbon cables

With a prying tool gently pull up the cable connector to disconnect it from the board
Now do the same for the battery and power cables on the right

With a prying tool gently pull up the cable connector to disconnect it from the board

Now do the same for the battery and power cables on the right

Step 10

              Removing top plastic shell

You have to unscrew the seven highlighted screws with a philips screwdriver
Note that one of the screws may be hidden under a Xiaomi Label sticker
Now with a pair of tweezers or with a prying tool you can gently lift up the plastic shell from the phone. Try not to force any junction but gently move it until you find it loose.
After removing the plastic shell you can also unplug the ribbon cable of the touch sensor. Do it as shown in previous step.

You have to unscrew the seven highlighted screws with a philips screwdriver

Note that one of the screws may be hidden under a Xiaomi Label sticker

Now with a pair of tweezers or with a prying tool you can gently lift up the plastic shell from the phone. Try not to force any junction but gently move it until you find it loose.

After removing the plastic shell you can also unplug the ribbon cable of the touch sensor. Do it as shown in previous step.

Step 11

              Remove Electronics

First unplug the antenna with a pair of tweezers as shown in the first picture.
now you can gently lift off all the electronics from the housing. Beware that it is attached with thermal paste and glue so you might want to apply some jiggling movement to favour the removal.
Beware where you place your prying tool! It may damage or inadvertently break an electronic component!

First unplug the antenna with a pair of tweezers as shown in the first picture.

now you can gently lift off all the electronics from the housing. Beware that it is attached with thermal paste and glue so you might want to apply some jiggling movement to favour the removal.

Beware where you place your prying tool! It may damage or inadvertently break an electronic component!

Step 12

              Clean the thermal paste

Once the motherboard is removed you want to clean it with isopropil alchool before applying the new thermal compound to the new case
You can use an ear stick soaked with alchool to remove the old paste or any greasy residue

Once the motherboard is removed you want to clean it with isopropil alchool before applying the new thermal compound to the new case

You can use an ear stick soaked with alchool to remove the old paste or any greasy residue

Step 13

              Remove proximity sensor

You now have to remove the proximity sensor from the case
You can lift it with a pair of tweezers or with your bare fingers
do the same thing with the blue plastic component highlighted in the picture

You now have to remove the proximity sensor from the case

You can lift it with a pair of tweezers or with your bare fingers

do the same thing with the blue plastic component highlighted in the picture

Step 14

              Remove the speaker

First you have to unscrew the eight highlighted philips screws
then with your fingernails or a prying tool you can lift the speaker module from the bottom part of the phone
As last step remove the ribbon cable from the connector and put it aside

First you have to unscrew the eight highlighted philips screws

then with your fingernails or a prying tool you can lift the speaker module from the bottom part of the phone

As last step remove the ribbon cable from the connector and put it aside

Step 15

              Remove Bottom Electronics

The bottom module is secured by a single screw
please remove the antenna connector as shown in the second picture
To remove this module use a prying tool under the edges of the module to gently jiggle it until you can lift it
The module is held in place by glue, you need to move it a little until the adhesive loosens and NOT to simply try to lift it
Remember not to place your tweezer or prying tool under any electronic component, use parts of the pcb that look flat, please prefer plastic tools to metal ones

The bottom module is secured by a single screw

please remove the antenna connector as shown in the second picture

To remove this module use a prying tool under the edges of the module to gently jiggle it until you can lift it

The module is held in place by glue, you need to move it a little until the adhesive loosens and NOT to simply try to lift it

Remember not to place your tweezer or prying tool under any electronic component, use parts of the pcb that look flat, please prefer plastic tools to metal ones

Step 16

              Start reassembling in the new case

Now you have to put all the components back in the new case, to do that please refer to the following steps
Replace the proximity sensor and the blue plastic piece back in the new case, first remove any protective film that may be present
Now peel off any eventual protective film, one may be placed on a copper heater sink
Now you have to apply a new thermal paste on the heat sink as in picture
Please use very little amount of paste for this operation
Then you can place back the motherboard and gently push it in place with your fingers until you find it very firm in its position

Now you have to put all the components back in the new case, to do that please refer to the following steps

Replace the proximity sensor and the blue plastic piece back in the new case, first remove any protective film that may be present

Now peel off any eventual protective film, one may be placed on a copper heater sink

Now you have to apply a new thermal paste on the heat sink as in picture

Please use very little amount of paste for this operation

Then you can place back the motherboard and gently push it in place with your fingers until you find it very firm in its position

Step 17

              Secure the top electronics

Now attach back the fingerprint sensor cable connector to its housing
Then insert back the plastic shell on top of the circuitry until you find that it falls in the groove
now you can screw back in place the seven screws as highlighted
then plug back the antenna cable
Depending on what parts you buy, you may want to take the antenna cable from the old phone

Now attach back the fingerprint sensor cable connector to its housing

Then insert back the plastic shell on top of the circuitry until you find that it falls in the groove

now you can screw back in place the seven screws as highlighted

then plug back the antenna cable

Depending on what parts you buy, you may want to take the antenna cable from the old phone

Step 18

              Secure back the bottom electronics

Before placing back the board you may want to remove a plastic film that protects new glue for the components
Put the board back in place until it sits firmly standing in the groove, the glue should also keep that in place
connect back the ribbon cable
place the speaker back and secure it with the eight screws as in step seven.
As you can see from the picture if there are cables or films that are in the way while you assemble your phone, you can use tape to help you out

Before placing back the board you may want to remove a plastic film that protects new glue for the components

Put the board back in place until it sits firmly standing in the groove, the glue should also keep that in place

connect back the ribbon cable

place the speaker back and secure it with the eight screws as in step seven.

As you can see from the picture if there are cables or films that are in the way while you assemble your phone, you can use tape to help you out

Step 19

              (Re)Place the Battery

Depending on the part you buy also the highlighted plastic piece may be not present so you have to take it from the old phone. This piece is crucial, it helds in place the volume and power buttons. To place it simply insert the button (if them have fallen off) and place it in the only direction possible
Peel of the adhesive film and place the battery as in picture
Then connect the battery ribbon cable with the Screen and Power ribbon cables back in place
Then you have to mount back the protective metal shells both on the left and right connectors as shown in the last picture
At this time you can use a new battery for the phone
If you damaged your battery during removal (not shown in this guide) please throw it away and use a new one, this could be very incautious

Depending on the part you buy also the highlighted plastic piece may be not present so you have to take it from the old phone. This piece is crucial, it helds in place the volume and power buttons. To place it simply insert the button (if them have fallen off) and place it in the only direction possible

Peel of the adhesive film and place the battery as in picture

Then connect the battery ribbon cable with the Screen and Power ribbon cables back in place

Then you have to mount back the protective metal shells both on the left and right connectors as shown in the last picture

At this time you can use a new battery for the phone

If you damaged your battery during removal (not shown in this guide) please throw it away and use a new one, this could be very incautious

Step 20

              Close your phone

Before trying to close your phone, try to turn it on, to charge it and to check if it works correctly. Like this you can solve any issue without the need of opening it back
To close your phone you could use the original adhesive if you were careful enough during removal, though this could lead to later unsealing of the case; hence I suggest you to use a specific glue like the B-7000 glass glue
Put either the adhesive or the glue around the perimeter of the phone (not the rear glass) in the most homogeneous way possible
After application gently close the rear glass and apply some pressure
You should apply even pressure on the whole screen for many hours, you should use the screen clamps to guarantee perfect adhesion
If your phone looks like the last picture simply heat it up again and remove all the adhesive with isopropil alchool and start again. otherwile it could open at any moment
Don’t worry if some glue pops out from the borders, you’ll be able to remove it once dried either with your fingernails or isopropil alchool

Before trying to close your phone, try to turn it on, to charge it and to check if it works correctly. Like this you can solve any issue without the need of opening it back

To close your phone you could use the original adhesive if you were careful enough during removal, though this could lead to later unsealing of the case; hence I suggest you to use a specific glue like the B-7000 glass glue

Put either the adhesive or the glue around the perimeter of the phone (not the rear glass) in the most homogeneous way possible

After application gently close the rear glass and apply some pressure

You should apply even pressure on the whole screen for many hours, you should use the screen clamps to guarantee perfect adhesion

If your phone looks like the last picture simply heat it up again and remove all the adhesive with isopropil alchool and start again. otherwile it could open at any moment

Don’t worry if some glue pops out from the borders, you’ll be able to remove it once dried either with your fingernails or isopropil alchool

After the last step you should have correctly closed the rear glass of your device and you can now use it again good as new!

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                    Rensh

Member since: 07/05/2021

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Johnny - Aug 23, 2021

Thank you very much, you saved me. I was looking for such a detailed guide as I broke the metal part and the screen

Rensh - Aug 24, 2021

Reza Priyagung Ferryansah - Feb 27, 2022

How do you replace volume & power button ?

Rensh - Feb 28, 2022

Hi Reza, you have to proceed but withouth the battery removal, then you lift the plastic cover for the power and volume buttons. You can then replace them and close back your device. Try to read ge whole guide and take just the necessary steps.

Member-Contributed Guide#

Introduction#

What you need#

Member-Contributed Guide

Introduction

What you need