It is more complicated than I expected. Dang it Samsung. Thanks for making and sharing the guide! The tip about not pressing on the center of the press connectors/Lego connectors is important sounding!

I feel that removing the speaker module and disconnecting the ribbon cables from that bottom module may be unnecessary. Is that true?

In my mind it is only necessary to disconnect the ribbon cables from the motherboard to free the motherboard.

Eng Translation of Martin Thiel's comment:

The battery is really bad. It works best if the display has been heated 3 times with the iOpener and then a few drops of adhesive remover, 4 per corner. Then use the spudger to lift the bottom left corner. The rest is then very easy.......

I think we should add that they should treat the back glass as gently as a raw eggshell. That's because I thought I wasn't applying excessive force and caused the glass to crack, but I didn't understand what counts as "excessive force." (A bit vague)

What excessive force actually means is as soon as you feel any resistance at all when slicing glue with the pick, stop and apply more heat before continuing. The glass can crack very very easily, when pressure is applied in only a small section.

I think we should mention that the glass needs to be barely too hot to touch to determine when it's hot enough that a pick can be slid underneath.

Or we can mention a thermometer temperature, but most diy people probably don't have a thermometer to check.

A lot of people seem to have issues using the iopener to unglue phone parts like back glass (can Google it), likely because the glue didn't get hot enough, so mentioning the desired touch temperature can be helpful for DIYers to ensure that their glue is sufficiently weakened and they can begin working off the part.

(Just being hot isn't enough for glue to weaken, as you can probably attest to if you've ever had your phone get really hot but the back cover never came loose)

Is it possible that the screw location diagram is incorrect? On my g8 ee it seems that the longest screw (the orange 8 mm?) Goes closest to the screen hinge and the other 4 screws are identical size (the 7mm?).

In the diagram, the longest screw (orange) is shown as being located farthest from the screen hinge. But I've also seen a YouTube video possibly corroborate this guide's screw information, differing from the 2 G8 EE models I checked in person.

Im sorry about my late reply. I myself stopped after a few drops since it didn't seem to weaken the glue enough and I read the scary comment about it destroying the display. I heated up the screen glass till it's barely too hot to touch. And they should be enough to loosen the glue. If it gets too cool then you have to heat the scren up again till it's barely too hot to touch. (I tried to add this detail to the guide, but perhaps they did not approve my edit.)

But it sounds like other people may have been successful with the alcohol, I just didn't want to take the risk

I tried a few drops of isopropyl alcohol 91%, but the battery was still firmly stuck. I was too scared to use more alcohol so I heated the right side of the screen with an iOpener.

And once the battery felt warm, I was able to pry between the frame and the right side of the battery using triangle plastic pick. Pry, applying upward force to the battery. I kept prying on the side, moving up and down the side and prying again, till the battery popped out. It popped out on the top left corner for me, personally.

I did what the person in this video did: https://youtube.com/clip/UgkxDMPJGQ5EOkd...

I had trouble lifting up to create a gap. What I did is watch Jerry rig everything's teardown and he said the back glass must be barely too hot to touch in order for the adhesive to weaken.

So I heated the iOpener till it was too hot to touch, but not so long that it would burst. Put on right edge for a few minutes. Then I lift with the suction cup, using my middle finger and thumb to grip the sides of the phone and my pointer finger to pull up on the suction cup .

I cleaned the glass with an alcohol wipe beforehand to make the suction cup stick better, though I'm sure any cleaning method that removes fingerprints will help.

I couldn't make as big a gap as shown in the picture, but I was able to stick my metal jimmy tool carefully into the crack between the glass and the metal frame and it was just enough to slide the tool a little. And I was very careful since it's a metal tool. After that I could stick the plastic pick in and slice the adhesive and then that gets you started removing the back cover. Reheat often to weaken and slice adhesive. STOP and reheat if it even gets a little harder to slice. DON'T risk cracking the glass.

Thanks for the helpful advice!

Thank you for the warning. sorry that happened! :/