Huawei P20 lite - Replacing the screen

1. Turn off your device by holding down the power button until the “Power off” option appears.
2. Use your finger to confirm that you want to shut down your Huawei P20 lite and wait until the screen goes blank.

1. The back cover’s really glued to the chassis. Heat the device evenly with hot air to soften the glue. A temperature of 60 - 80°C should be sufficient. As a rule of thumb, you should still be able to touch your device without it being uncomfortably hot.
2. The easiest way to loosen the back cover is to use a flat and flexible tool such as the iPlastix or iFlex. You will also need several picks to unstick the back cover all around.

1. Heat the spot where you start and place a flat tool between the back cover and the frame.

The iPlastix is made of plastic, so it won't scratch the device. On the other hand, it's very soft and tricky to insert.

Be extra careful, the back cover can break very easily. If necessary, apply the heat several times and try again. Removing the back cover might take a little longer. Take a little more time and work carefully to make sure you don't break anything.

1. Once the tool is inserted, stick a pick into the gap to keep it open. Then run the tool around the entire edge to gradually loosen the glue.

Be careful not to push your tool too far into the device on the side at the top of the picture. This is where the fingerprint sensor connection cable is located.

1. Then heat the next part and insert the picks one by one.
2. Once the back cover is loosened, lift it very slightly. The fingerprint sensor is still connected with a cable.

Use a suction cup to lift the glass if you can’t find anywhere to insert the tool

• 2 × 2,9 mm Phillips
• Battery connector

Before starting the repair, always disconnect the battery contact first to prevent short circuits and avoid accidentally turning on your device during the repair.

1. Use a phillips screwdriver (PH00) to remove the phillips screws. Then take off the cover. Put all the parts in the same section of your magnetic pad.

The cover is hooked under on the upper side (direction of arrow).

1. Using the spudger, carefully disconnect the battery contact from the motherboard. Use a plastic tool to avoid short circuits.

• Fingerprint connector

1. Then carefully disconnect the fingerprint sensor with a spudger.
2. Now you can put the back cover aside.

• 6 × 2,9 mm Phillips

Next, remove the brackets that protect the contacts on the motherboard.

1. Loosen the Phillips screws. One of them is covered with a small white sticker.

Use a Phillips screwdriver size PH00.

1. Then carefully loosen both brackets with a pair of tweezers.
2. The brackets are hooked in several places.

• Camera connector

1. Remove the two camera modules. The main camera is connected to the mainboard with two connectors.
2. Loosen all contacts carefully with a spudger.

Always lever from a side where there are no small components on the mainboard. This way you avoid damage.

1. Remove both cameras from the device.

Make sure that no dirt or fingerprints get on the camera lenses.

• Antenna connector
• USB flex cable connector
• Display connector

1. First remove the SIM card holder if it is still in the device.

Several flexible flat cables and an antenna are still connected to the mainboard.

1. Loosen the contacts of the flexbile flat cables with the spudger. The cables connect the display and the USB board to the motherboard.
2. Loosen the antenna cable carefully by turning the tweezers. Do not lever off the contact with a spudger. There is a danger of damaging the socket on the circuit board.
3. Carefully lever the board up a little and then take it out.

• 6 × 2,9 mm Phillips
• 1 × 2,5 mm Phillips

The speaker is fixed with several screws, lightly glued and hooked to the frame.

1. Loosen the Phillips screws of different lengths. Sort them on a magnetic mat, for example, so you don't mix them up when you insert them again.
2. Then lever the speaker in several places until you can lift it a little and remove it.

• USB flex cable connector

1. First remove the flex cable running over the battery.
2. Loosen the connector and remove the cable.
3. Then remove the black antenna cable out of its guide.
4. Carefully lever the USB board up with a spudger. Push it away from the frame at the bottom to release it.
5. Then take the board out of the device. Make sure that the rubber seals for the USB socket and the headphone socket remain on the board. If they remain in the case, take them out and attach them to the board.

The removal of the flex cable for the buttons of the Huawei P20 lite is a little more tricky.

1. First loosen the black plastic cover over the flex cable.
2. Heat the contact field glued in the device to make it easier to loosen.
3. Use a thin tool such as a steel spatula to slide it under the gold contacts to loosen them.
4. Then remove the cable from its hole by warming up the glue and driving with the spatula on the inner side between the cable and the frame.

1. The earpiece is lightly glued into the device.
2. Heat the adhesive and lift out the earpiece.
3. Note the orientation of the golden contacts to insert the earpiece correctly later.

The battery is glued into the case generously.

1. You can loosen the glue more easily by warming it up again. But never heat the battery directly, heat it from the display.
2. Slide a flat tool like the iPlastix under the battery. Where the motherboard used to be, you can get right under the battery.
3. Then move the tool around and gradually lift the battery out of the device.
4. Try to bend the battery as little as possible and take care not to damage the surface.

1. Now compare your display with the new replacement display and check if you still need to take over small parts such as seals.
2. Also check the spare part for external damage. If the glass is scratched or the flex cable is damaged, do not install the display but exchange it with your dealer.
3. If everything is in good condition, remove all plastic film over the various adhesive surfaces.

1. Place the battery in the device.
2. Make sure it has some space on all sides and is not pressed against one side.

1. Put the earpiece in its place.

Make sure that the golden contacts point downwards.

1. Place the cable for the control buttons on the side of the device.
2. Glue the golden contact surfaces firmly.
3. Insert the black plastic cover.
4. Check if the keys can be pressed.

1. Make sure that the rubber seals for the USB socket and the headphone socket are on the board.
2. Place the board on the bottom edge and press it down until it fits properly.
3. Then push the black antenna cable into its guide and along the right side of the battery.
4. Connect the flex cable. The white arrow must point upwards.

• 6 × 2,9 mm Phillips
• 1 × 2,5 mm Phillips

1. Insert the speaker and press it firmly into the device until it sits properly.
2. Secure the speaker with the Phillips screws.

• Antenna connector
• USB flex cable connector
• Display connector

1. Insert the mainboard into the device and make sure that you do not pinch any cables under the board.
2. Press the motherboard a little and check if it fits correctly.
3. Connect the two flex cables and the antenna cable. You can use a pair of tweezers to position the antenna and then connect it with a spudger.
4. Insert the SIM card holder. If it gets stuck, don't push it in with force, but check if the mainboard is seated correctly.

1. Place both camera modules in their openings.
2. Connect the connectors. Make sure they click into place with a slight click.

• 6 × 2,9 mm Phillips

1. Reinstall the two brackets.
2. The brackets are hooked into several places on the frame and on the main board.
3. Screw both brackets in place.

1. There are several ways to put the backcover back on again.
2. If the existing adhesive is still in place and available in all places, you can use it again.
3. If this is not the case you have to use new glue.
4. First remove all old glue residues.
5. Then apply the new glue. You can use thin double-sided tape or liquid glue. Be very sparing with the glue and make sure it doesn't get into the device.

1. Place the back cover next to the device and position the flex cable of the fingerprint sensor over the contact on the motherboard.
2. Then connect the fingerprint sensor

• 2 × 2,9 mm Phillips

1. Connect the battery to the motherboard.
2. Put on the cover and screw it on.

1. Before you finally close the device, you should test it.
2. Test if the touch screen works at all points by sliding an app along the edge and zigzag across the screen. If the app always follows your finger and doesn't jump back, the touch is fine.
3. Also check the maximum and minimum brightness of the display.

1. Finally, place the back cover flush on the frame and make sure it is exactly centered.
2. Press it firmly so that the adhesive bonds properly.
3. You can also warm it up a bit and keep it between a few books for 30 minutes so that the glue will bond properly.