Samsung Galaxy Note9 Back Cover Replacement

If using an iOpener it will need to be fully heated and set on for at least 5 minutes. You’ll know the phone is hot enough when its almost too hot to touch.

Just came here to say exactly that. The instructions should be amended to state that: "Get it fully hot and leave it there for at least three minutes solid."

It takes so much heat that it is concerning that damage might be caused to the internal parts. It is difficult to heat the glue, pull the case apart and insert the pick at same time. May need some more pointers to handle these situations first, to prevent possible damage. Also what about the glue that is heated and then cooled before opening? Does it run inside and cause greater adhesion after it cools? Another thing, the handling may cause the phone to turn back on while working to separate. Don't know that that is of concern.

Angle the pick up very slightly so the point goes up into the curve of the glass, not down towards the workings of the phone

It's extremely easy to crack the back glass when nearing and rounding the corners. It's probably a good idea to soften the adhesive with heat as you go.

Step 5 is NOT "cut through the adhesive", that's steps 5-10. Step 5 is "Begin the careful process of cutting through the adhesive, starting at the right side where you already softened it. Proceed carefully, slowly, and warmly through the following steps."

These comments are spot-on. I never break a phone, and I cracked the back glass following the instructions without seeing these comments first. Heat the back much more than you think you need and go super, super slow.

There seems to be a lot of glue at the bottom, I broke the glass as I was cutting past the charging port - not sure if it was already fractured or just not enough heat (I used Sellotape so it didn't break up into pieces!)

I think LOTS of heat & patience is the key!

Be very careful around the corners and bottom (probably top too, but I didn't have a problem there). Make sure you've cut in far enough down the side first (go in about 1cm) but less round the corners and work in slowly.

If using an iOpener it will need to be fully heated and set on for at least 5 minutes. You’ll know the phone is hot enough when its almost too hot to touch.

Be VERY patient as you slide the opening picks around the periphery of the glass, and use heat very liberally. Make sure the smooth, clear aspect of the iOpener is against the glass, not the rough black portion.

Happened to me as well.

On my phone the fingerprint sensor did not come off with the back cover but stayed on the phone!

I am installing a new backplate (this is my first repair; I was CERTAIN that I would crack the back glass, and I was NOT wrong) but I’m not sure how tweezers are meant to remove gooey adhesive! I simply used the blue plastic pry tool as a scraper and gently rolled up the goo. Maybe the glue is different because I have a refurbished phone? That may also explain why I had so much trouble with Step 1. Hope that this helps!

The fingerprint sensor I had was much to tight to connect it before the rear glass. After experimenting with the finest tweezers, trying to secure the connector was not possible. Instead I removed the sensor from the glass, secured the connector to the port then lowered the glass over the sensor. Because the sensor body is closer to midline I had enough clearance to make fine adjustments with a pin in order to align it with the rear glass cutout. Other than reversing those steps the rest of this guide was excellent. Good work and successful repair.