Disassembly/Repair of the mobile device Samsung Galaxy Note 20 Ultra SM-N985 (Samsung SM-N986B (Int); SM-N986U, SM-N986U1 (USA ); SM-N986W (Can); SM-N9860 (Ch); SM-N986N (Kor)) with each step description and the required set of tools.

⚠️️ Before disassembling, do not forget to turn your phone off.

Use the ejection tool (aka Needle) or Paperclip. Push the tip all the way into the hole until the tray ejects, and then pull the tray of SIM and Memory card (Micro SD) out.

⚠️️ Pay attention! The tool must be inserted into a hole on the edge of the phone's housing. Do not press too hard. It may break the tray eject mechanism.

We recommend using a special heating device such as a separator machine, heat gun, or heating mat. It will simplify the process. You can use a home hairdryer, but you will have to make a nozzle by hand or have a suitable one in the kit to gently heat and concentrate the heat flow in the right place.

ℹ️️ The surface of the back cover must be heated to soften the adhesive underneath. The approximate heating temperature is 50° C / 125° F.

Use a thin plastic film or pick for separation. To facilitate the process, you can use isopropyl alcohol. It is often the most difficult to pass the tool between the parts to be divided. Choose the far edge from the FFC cables or buttons.

On the back cover we have a microphone.

Using a Phillips #000 1.5mm screwdriver we need to unscrew the eleven screws to detach the top part with NFC, the middle part with wireless charging and the bottom part with the speaker assembly.

Disconnect two connectors, pry over the edges and remove the assembly of the NFC, wireless charging, and cover with antenna transmission lines and loudspeaker.

Disconnect the battery connector as soon as possible. It is better to use a non-metal or plastic tool to avoid any damage.

ℹ️️ The Samsung Galaxy Note 20 Ultra model has a battery EB-BN985ABY with 4500 mAh capacity (aka rechargeable battery).

Using a screwdriver Phillips 1.5 mm (PH#000), unscrew the four screws securing the cover with transmission lines.

Disconnect one connector. Pry over the edges. Move an opening tool along the edge detach the clips and remove the cover with earpiece speaker, flashlight, and transmission lines and pads for antenna.

Using a Philips 1.5 mm screwdriver (PH#000), unscrew two screws securing the cameras assembly.

Pry up the connectors of the display cable, touchscreen cable, charging port cable, s pen cable, inter-board cable.

⚠️️ Be careful when removing the cables from the connectors, the cables are pretty thin, and it is easy enough to break them or damage the contact tracks inside.

Carefully, preferably from the edge, disconnect the connector and remove the inter-board cable connecting the mainboard to the daughterboard (also known as the sub-board).

⚠️️ Be careful when removing the cables from the connectors, the cables are pretty thin, and it is easy enough to break them or damage the contact tracks inside.

ℹ️️ A MAIN mark on the FFC cable (flexible flat cable) indicates its correct position.

We can take out the front camera.

⚠️️ Usually this camera is extremely well glued with an epoxy resin and is quite difficult to unglue without damaging it.

Carefully remove the printed circuit board. There is no need to use a lever or try to reach the circuit board by force. Make sure that nothing is getting in the way or holding the circuit board.

The motherboard, also, may be attached with attachments like latches or hooks, be careful.

⚠️️ Do not bend the circuit board when removing it or push tools under it. Unbeknownst to yourself, you can damage components or cables from the inside.

Next, we turn the motherboard over and disconnect the connectors on the inside and we need to detach the rear cameras assembly. They are intricately connected, take your time to find a way to separate them. See what's holding on and so on.

As we can see we have two rear cameras and one camera separately.

Pry up one connector on the sub-board. The connector is a branch of charging connector cable to the sub-board.

Using a Philips 1.5 mm screwdriver (PH#000), unscrew one screw securing the sub-board.

Remove the sub-board. It may be glued to the frame or attached with attachments like latches or hooks, so be careful.

ℹ️️ The sub-board contains a microphone spring contacts for the speaker, and an antenna unit.

⚠️️ It is not necessary to insert the tool underneath when removing the sub-board. Internal components could be damaged.

Using a Philips 1.5 mm screwdriver (PH#000), unscrew the two screws securing the charging port.

We can peel off the cable and take out the charging port. So, we peel it off, pry it up, pull it out.

With extreme care, remove the battery because it is glued from the inside by the manufacturer.

Also, we need to remember or look in advance at the location of the flat cables under the battery, so as not to damage them.

ℹ️️ In the display frame remained: the s pen, vibration motor.