iFixit - Answers With Device "Samsung Galaxy Note 20 Ultra"

Samsung Galaxy Note 20 Ultra: Re-sealing the back cover of the phone after opening

Thu, 09 Feb 2023 13:19:58 -0700

I bought a used Note 20 Ultra, and there are gaps in the side of the phone that indicate that the back is not on properly. I think it has to do with the adhesive; there is a bit of adhesive on the side. When I press down on the back of the phone the gaps close, but they open once I release it. Do you think applying something like an iOpener would melt the adhesive enough so that the phone will close and maintain its IP68 rating?

⟐ Answer edited February 09, 2023 at 13:19 MST

Samsung Galaxy Note 20 Ultra: Screen only responsive to S-pen on Samsung Note 20 Ultra

Tue, 18 Nov 2025 02:06:03 -0700

The top half will not respond to touch except its just fine when I use the S-pen. Unfortunately cant find the S-pen. (arggh!) Whats wrong, what can be done?

⟐ Commented November 18, 2025 at 2:06 MST

Samsung Galaxy Note 20 Ultra: Blue box stuck on main screen can't access anything else on my phone?

Sun, 05 Mar 2023 02:50:07 -0700

I have a blue box in the middle of my phones screen and it won't go away, I also can't go to any of my apps or other pages and I can't access my phones main screen or restart or turn off my phone. I tried editing a picture and it said to hold the back button and some other button but I'm not familiar with the other button it's referring too! Please help me remove this feature and get access back to my phone!

⟐ Commented March 05, 2023 at 2:50 MST

Samsung Galaxy Note 20 Ultra: galaxy note 20 ultra Black screen

Tue, 15 Aug 2023 02:55:12 -0700

Hi all

I have a galaxy note 20 ultra, which I have just replaced the screen, been working fine for a couple of days and picked it up this evening noticed it was not on, I tried to turn it on, but there’s no response totally black screen, I have checked and it is a charge, but still no response from the power button. I’ll try to do a force restart but again no response, so I completely dismantled can remove the motherboard cleaned and checked all connectors were firmly in place, but still no life.

Any help would be appreciated.

⟐ Commented August 15, 2023 at 2:55 MST

Samsung Galaxy Note 20 Ultra: Battery Power Connector Burnt Repair

Tue, 04 Oct 2022 12:29:18 -0700

Hi, I was wondering how do I go about repairing the battery connector area.

The phone had been exposed to some seawater after the adhesives came apart, and caused a short circuit and burnt the connectors together (both board side and battery flex cable side).

I believe that the vbat(?) and temp sense pads have been lifted off together with the burnt power connector component. The other pads still have some copper on its surface for soldering.

How do I fill and restore a makeshift pad? I have tried using a hot air gun, but I believe the board is too cold for solder paste to melt together. I don't own a rework/reflow station, and hoping not need to purchase one.

I was thinking if a lower temperature solder paste would work? Or would silver conductive epoxy such as MG 8331S can be used to remake the pads (not sure if solder can join on top of the silver epoxy)?

I'm trying to resolder this SMD part (https://phoneparts.mt/product/samsung-bo...) back onto the board.

Thank you.

Edit1: Picture of the area around. (It's still a stacked motherboard.)

Edit2: Schematics of the logic board.

⟐ Commented October 04, 2022 at 12:29 MST

Samsung Galaxy Note 20 Ultra: I change the Battery, the USB port and it still doesn't charge

Tue, 13 Aug 2024 02:23:32 -0700

What else do I have to do for it to be charged fully I already put in a new battery and changed the USB port.

⟐ Answered August 13, 2024 at 2:23 MST

Samsung Galaxy Note 20 Ultra: Front facing camera not working after service pack replacement

Thu, 15 Jul 2021 19:40:32 -0700

I recently repaired a friends Note 20 ultra screen with a service pack. The repair went well with swapping all the original parts over. However when we booted the phone the front facing camera will not work. I went through and pulled the original camera from the original housing to try that. Since the service pack came with one in place I thought maybe it was faulty. However even after using the original and going through and factory resetting and doing everything I could find online to do still no dice. The front facing camera still will not work. Anyone run in to this issue or know how to potentially remedy this?

⟐ Answered July 15, 2021 at 19:40 MST

Samsung Galaxy Note 20 Ultra: Nothing changed after a battery change

Thu, 05 Mar 2026 09:05:22 -0700

The old battery was very weak, over 4 years old at this point, and the Samsung Members app was saying that the battery health is low. So I bought the battery here on iFixit about 2-3 weeks ago, and successfully changed it. First of all did the battery calibration method as prescribed on the box, charged it to 100%, and let it drain, did it a few times. Still nothing changed, the phone kept saying it has 10 hours of battery life at 100% and rapidly going down from there. Samsung Members still said low health, and AccuBattery reports about 82% of battery life remaining. Next I tried resetting the BatteryStats in *#9900# menu, nothing changed. Today a system message appeared saying that the battery is degrading. Seeing that still nothing changed, I wiped the cache from the recovery menu, but it still seems to have done nothing. Has anyone else encountered this and found a solution? I read on XDA that a solution might be in rooting the phone, changing some files and flashing back to stock, so it resets the battery life to 100%, but this seems like a stupid solution to such a simple problem, if it were some other phone i would perhaps do it, but considering it's a Samsung, rooting will make me lose a ton of features I wouldn't want to lose.

⟐ Commented March 05, 2026 at 9:05 MST

Samsung Galaxy Note 20 Ultra: Part identification on Samsung phone

Fri, 22 Dec 2023 06:18:08 -0700

Does anyone know what the part circled in blue in picture below is called?

⟐ Answer accepted December 22, 2023 at 6:18 MST

Samsung Galaxy Note 20 Ultra: Water damaged. No wifi, no network, cant reset

Tue, 12 Sep 2023 19:23:02 -0700

I went to a water park and the phone was soaked in water. I left it in the rice container for 3 days out in the sun and it finally booted up. The phone was in airplane mode, no wifi, no network. I did a reboot and still nothing. When i ejected SIM tray it said no SIM found but when i put it back in, no network or wifi. I tried to reset wifi and network several times but didn't help. I cannot do a factory reset because it says i needed wifi. At this point im guessing these 2 features are on 1 component and it got damaged somehow. What part do i order so i can swap out and bring my phone back to life? Thank you

⟐ Commented September 12, 2023 at 19:23 MST

Samsung Galaxy Note 20 Ultra: after replacing the front facing camera my phone says camera failed?

Tue, 10 May 2022 02:54:54 -0700

after replacing my front camera in my note 20 ultra and now my phone is saying the camera failed. i have updated my phone to the latest update and still not working?

⟐ Answer deleted May 10, 2022 at 2:54 MST

Samsung Galaxy Note 20 Ultra: Note 20 ultra back cover replacement

Sat, 26 Dec 2020 15:33:40 -0700

Hello do you guys have note 20 ultra replacement back covers for sale?

⟐ Commented December 26, 2020 at 15:33 MST

Samsung Galaxy Note 20 Ultra: S Pen Detected Disconnects when Removed

Fri, 20 Dec 2024 02:37:09 -0700

The S Pen connects normally with the phone when it is inserted but after 2-5 seconds of being removed it disconnects and has to be reinserted. Battery shows 100%.

Samsung Galaxy Note 20 Ultra: Microphone faulty and crackling

Sun, 07 Nov 2021 23:48:17 -0700

Microphone works on phone app speakerphone but not with other apps or normal phone call, also crackles badly

Samsung Galaxy Note 20 Ultra: USB port not working.

Fri, 22 Dec 2023 16:27:38 -0700

If I connect it to its (original) charger, it won’t charge unless I push it to a point where it stays connected.

What’s more, the original cable doesn’t seem to work at all, while the third-party cord I bought on Amazon has to be connected on specific side on both extremes, so despite being USB type-C to USB type-C, it’s no longer reversible.

⟐ Commented December 22, 2023 at 16:27 MST

Samsung Galaxy Note 20 Ultra: How to fix green line on screen

Thu, 05 Oct 2023 00:01:19 -0700

Please tell me how fix green line on screen as quickly as possible

⟐ Answered October 05, 2023 at 0:01 MST

Samsung Galaxy Note 20 Ultra: Re-sealing the back cover of the phone after opening

Fri, 10 Feb 2023 00:13:43 -0700

What does the factory water resistant do that we couldn't do it?

⟐ Answer edited February 10, 2023 at 0:13 MST

Samsung Galaxy Note 20 Ultra: How much to change back cover?

Sat, 10 Sep 2022 16:28:47 -0700

My back cover/grass is cracked. I'd like to know how much it would cost to have it replaced.

⟐ Answered September 10, 2022 at 16:28 MST

Samsung Galaxy Note 20 Ultra: Keyboard is collapsing on its own

Wed, 05 May 2021 20:41:42 -0700

In the messenger app my keyboard collapses on its own after about eight seconds. Can anyone help me with this solution to this problem?

⟐ Commented May 05, 2021 at 20:41 MST

Samsung Galaxy Note 20 Ultra: New battery is not recognized as new, same voltage and capacity

Wed, 04 Mar 2026 19:37:52 -0700

Hi!

Problem: Got my new battery for Note 20 Ultra from IFixIt, phone does not seems to notice it have new battery and still charges it to exactly same capacity\voltage point as old one (~4.35v and about 3750mAh, instead of 4.45v+ and 4200-4300+mAh)

What I have tried already:

Recalibration method written on package (discharge to 0, charge to 100 + 2hrs, discharge),
Tried resetting battery stats (*#9900#),
Wipe cache partition and all that. Code *#0228# does not work after some android update...
Tried all tips and tricks from local AI assistant.
Tried to disconnect the battery, boot up using cable, reset battery stats and boot in recovery to wipe cache, then disconnect the cable and wait for a few hours with no power connected to phone circuit.

What I am left with: Nothing works. It just continue to behave like it's an old battery. The only solution seems like - going to Samsung service, but their price for using their software to reset calibration data could be as high as my new battery or even more (that's what local IFixIt AI assistant told me).

There is still factory data reset, but Ai assistant told me that calibration data is probably held in NVM cell that is not accessible by normal user means, (I had same experience with my old Note 4 - data reset didn't help there either)

I don't mind trying service and pay some amount for their help, since that is probably the only way left, just wanted to ask IFixIt for help first...

In the end I put back my old battery, it holds very well still so there is no problems in that regard. Just want to find a way to use my new battery at it's full capacity.

What I am looking for if you have any idea: Any other ideas apart from what I have described already.

May be you had similar experience and you can confirm that going to Samsung or any other phone service working with Samsung phones can help.

Anyways, will be glad to hear any ideas or potential solutions, especially if they are based on your actual experience with similar situation.

Thank you!

⟐ Commented March 04, 2026 at 19:37 MST