Motorola G30 screen replacement

Remove the SIM card tray with a pin or a small pointy object

Unclip the plastic back cover using any tool you like (mediators, sprudgers, Jimmy...)

Slighly move the back cover in order to unscrew the plastic piece behind it

Remove the 9 small Philips-head screws inside

You will also have to remove small black adhesive pieces to be able to remove the part completely

Once the black plastic cover piece is removed, unplug the cable holding the back panel

Once this flex cable unplugged, lift the back panel completely

Unplug both battery and display connectors

Battery on the right

Display in the middle

You can use the opening tool as lever.

Very carefully unglue the battery

Unscrew the cover at the bottom of the phone

7 small Philips head screws to remove

A little black adhesive to peel off around the edges

Unplug the connector

Detach the display flex cable from the back of the chassis

Steps 9 and 10 are only useful if you order the display without its frame. Move on to step 11 if you intend to order the display with its frame

Heat up to help unglue the screen

Unglue the display from the chassis

I could not properly unglue with a cutter blade on the side. My technique is simpler and more brutal: I pushed the display away from the connector hole, with a rigid tool.

Remove the glass shards still glued around the frame

Replug the battery pack

Test the battery voltage on the test point to the left of the connector (the ground is everywhere on the metal chassis): it must be between 3.6 and 4.2 V

Unglue the screen-USB-motherboard flex cable from your broken screen, and replug the bottom USB board with the top motherboard

Turn on phone with Power On + Up buttons

Plug it to the computer with an USB-C cable

Type "lsusb" in a shell

If you can read something like "22b8:XXXX Motorola PCS moto g(30)", congratulations: your motherboard still lives

Once your phone has been successfully torn down and tested, it is time to order the replacement screen

The part will cost you around 15-20€. You can find it here for instance

Two choices: ordering the display pre-assembled on a new frame, or ordering it without

I recommend pre-assembled display, it will be more sturdy and less subject to breaking

While waiting for your order, don’t forget to store your parts and small screw properly

If you ordered the display pre-assembled on a frame, you will have to move all the components from the old chassis to the new one

You will find the small button panel on the chassis side, unglue it carefully

Start by ungluing the black tape covering it

Unplug the button connector from the main PCB

Unglue the button flex board carefully

Glue it on the new chassis

Unscrew both PCB

The top one is held by 2 screws

The bottom one is help by one screw

Slide the top PCB out of the chassis

Under it, there is a small undefined module, and an opaque sticker

Get the module out of its casing

Unglue the sticker under it

Replace both module and sticker on the other side

Remove the bottom PCB

The haptic module is under it, unglue it carefully

Start by the connector side

Once the connector side is lifted, it is easier to get to the rest of the module and unglue it

Try to salvage the stickers and glue them back to the new frame

You can also use new stickers

The pink sticker is a very thin thermal pad, you can replace it by thermal paste

The orange sticker is a tape copper foil

I don’t know how to replace the metallic grey thing, it is probably use for a better RF shielding

Insert the top PCB into the new frame

Don’t forget to move the button PCB small connector out of the way, it could get stuck under the board

Plug the elements back

Top and bottom screen module connectors

Right-side antenna cable

Small button PCB connector

Screw the boards back in place

Replug the back cover connector

A step you don’t see on the pictures because I forgot

Rescrew the two PCB covers

Clip the cover back in place

Insert the SIM card holder