iFixit - Answers With Device "Samsung Galaxy S8"

Samsung Galaxy S8: How do I remove Samsungs Live Demo Unit Software?

Mon, 14 Oct 2024 08:23:18 -0700

Hello all! I have recently bought a lot of samsung smartphones on eBay. They are all Live demo Units. I am aware that there is no baseband in this phone and no IMEI assigned to them so it will never be able to connect to a cellular network but im getting really annoyed with the live demo software and would like to know how to remove it. I would flash with Odin but im on a MacBook Pro so thats not an option.

The phones are:

Samsung Galaxy s6 Edge (SM-G925x)

Samsung Galaxy s6 (SM-G920x)

and...

Samsung Galaxy s8 (SM-G950-XU)

Thanks!

Also don't bother saying return it because the screen of the s8 is worth the same that I paid for all of these. ($200 CAD)

⟐ Answered October 14, 2024 at 8:23 MST

Samsung Galaxy S8: Green flickering screen Cracked

Mon, 25 Sep 2023 02:03:36 -0700

My phone is cracked really bad in the front and back. Now it has a permanent greancolor line across the screen.It also had one black spot and i can't see anything behind that spot. When i use my phone a green screen flickers and then covers my entire screen. while this is happening my screen still works, i can feel the vibrations when i touch the screen. Will replacing the screen fix these problems or do i need a new phone?

⟐ Commented September 25, 2023 at 2:03 MST

Samsung Galaxy S8: How to bypass FRP lock on Galaxy S8 SM-G950W

Sat, 08 Jun 2024 02:19:13 -0700

I bought a galaxy s8 and it is frp locked.. It is the Canadian version (SM-G950W) and I have tried everything but it's not working, any help would be awesome

⟐ Answered June 08, 2024 at 2:19 MST

Samsung Galaxy S8: Galaxy S8 - No cellular signal

Tue, 26 Aug 2025 01:59:26 -0700

I replaced the cracked display on my S8 and re-assembled it. Everything works great except that I can't get a cell signal. I just the “no” symbol (circle with a slash through it) where I should get the signal strength bars. I’ve tried adjusting the various cellular network settings without success, but even without that, I’m pretty sure it’s a hardware problem.

Any ideas on how to fix it?

⟐ Commented August 26, 2025 at 1:59 MST

Samsung Galaxy S8: Phone screen won't stay off during call

Tue, 24 Aug 2021 22:42:47 -0700

When I use my new phone for calls, it always turns on and starts doing random things during the call. Have tried to adjust all kinds of sensitivity settings. Have only a slim case on it...no screen protector yet. Very frustrated. Thanks!!

⟐ Commented August 24, 2021 at 22:42 MST

Samsung Galaxy S8: How to recover data after factory reset Samsung Galaxy S8

Sun, 05 Jul 2020 22:28:52 -0700

Hi, how to recover data after factory reset Samsung Galaxy S8? My phone got back to factory resetting without notice yesterday, and most data was erased from the phone. Can I recover data after factory reset Galaxy s8? How? Please help.

⟐ Answer deleted July 05, 2020 at 22:28 MST

Samsung Galaxy S8: S8 Phone battery temp to low error

Mon, 29 Sep 2025 11:01:35 -0700

I had to replace the I/O daughter board because of my charging port not working once i did it was working fine but after a night of charging and on the bus the next day i attempted to charge it again and it came back with this warning.

It gave me reason to believe my charger or battery was the issue so i put the old one back in and now it does the same as well

In my research for an answer i have found that it could be the daughter-board with charging or it could be the charging coil and antenna assembly on the back of the phone.

Has anyone else had any luck with replacing the charging coils after this type of error ?

⟐ Answered September 29, 2025 at 11:01 MST

Samsung Galaxy S8: Why dissassemble entire phone to replace broken glass?

Thu, 16 Feb 2023 20:05:15 -0700

I need to replace the broken glass on a Galaxy S8. The LCD and digitizer are still fine, so I really only need to replace the glass, not the whole screen. Since entire screens are still $200 but the glass is just $20-30, obviously I want to replace just the glass. Although I haven't found a specific guide for that here on ifixit for just the glass replacement, there are plenty of YouTube videos of the process. One thing I don't understand is why they take apart the whole phone first from the back when only replacing the front glass. Can anyone tell my why that's important?

It seems to me I should be able to just apply heat directly to the front glass and take it off, then just glue a new glass on. I'd really prefer to not worry about messing up some of the internals.

⟐ Commented February 16, 2023 at 20:05 MST

Samsung Galaxy S8: Half of my screen keeps going white, what's causing it?

Sat, 21 Jan 2023 00:40:58 -0700

This hasnt been happening at all until just yesterday. My screen is already cracked but I cracked it even more the day before yesterday. Yesterday the screen would flicker in the lock screen and randomly after an hour or so of use half the screen would go white, just enough of the screen that it covers the whole keyboard except for the autofill bar. The screen glitches at random and is easily fixed by resetting the phone, but it becomes tedious since I use my phone a lot. Do I have to get the screen fixed?

Edit: The situation got way, way worse. I can’t use my phone at all anymore. In addition to the white screen, the rest of the screen just now started to go completely dark and flicker. Resetting the phone no longer fixes the issue. It got so bad I had to use my laptop to edit my question. This glitch is not only annoying, but dominating my entire phone to the point that it wont work properly.

⟐ Answer edited January 21, 2023 at 0:40 MST

Samsung Galaxy S8: Broken front screen (touchscreen still works).

Tue, 22 Nov 2022 07:14:54 -0700

My s8 was apparently damaged while in my pocket (phone is 2 wks old, never dropped).

Damage is limited to a small (5mm) part on the lower corner, and I'm still able to use the touch functions. (turned on developer options, and feature that lights-up where touched - and entire screen touch still works, even where glass is broken.)

I have put some clear plastic adhesive tape over the broken part of the glass to prevent cracks from spreading as a temporary fix.

Touch function still works, can I simply replace the front glass? I see some options on ebay for about $30. (incl tools). "S8 Glass Replacement Screen Lens Front Outer Repair Parts". (I do not see this available on ifixit - otherwise I'd prefer ifixit as a vendor, of course).

Or do I need to buy a whole new digitizer (@$300)?

⟐ Answer accepted November 22, 2022 at 7:14 MST

Samsung Galaxy S8: Glass only repair with dry ice

Thu, 19 May 2022 08:56:38 -0700

Can you perform a glass only repair with dry ice on the S8? I know it can be done with liquid nitrogen.

⟐ Commented May 19, 2022 at 8:56 MST

Samsung Galaxy S8: Broken screen. Can not use touchscreen

Sun, 16 Jul 2023 21:47:53 -0700

I dropped my S8. The part where screen is broken still works. But, the rest of the screen, does not work. Therefore, I can't even turn phone off. And, I can't transfer pictures without touching the allow button. It won't let me. Any suggestions?

⟐ Answered July 16, 2023 at 21:47 MST

Samsung Galaxy S8: How hard is it repair?

Mon, 21 May 2018 02:58:20 -0700

My friend asked me to fix his cracked Samsung Galaxy s8 screen and back cover. How hard is it to open the phone? Can you open it without a heat gun or heat or do you need heat to open the Samsung Galaxy s8 phone?

⟐ Answer deleted May 21, 2018 at 2:58 MST

Samsung Galaxy S8: Phone wont charge or turn on

Sat, 19 Oct 2024 16:30:36 -0700

I received a samsung s8 edge for my birthday (Dec 22) and it was working fine until the 23 when i woke up in the morning i tried to turn it on and it wouldn't...i tried charging it assuming it was dead and it would not charge and still hasn't turned on...how can i fix this problem.

⟐ Commented October 19, 2024 at 16:30 MST

Samsung Galaxy S8: phone will not come on, shows triangle and will not charge x2

Fri, 26 Mar 2021 23:13:37 -0700

Sooo I have and S8 and S8+ doing screen repair on both. Now the phones will not come on, they only show triangle's and will not charge. I know this was an issue with the thermostat on S4's many years ago and had to change the charge port. I am not sure what needs to be done to fix this issue. I have a new cable and charge port on order but was not for sure if any one else has had this issue.

⟐ Answered March 26, 2021 at 23:13 MST

Samsung Galaxy S8: Samsung Galaxy S8 Display Issues

Tue, 19 Dec 2017 16:41:57 -0700

The screen on this device went black during normal use. After hard reboot, i see the normal boot flash screens (samsung, verizon, android is loading), but after android starts to load, the screen goes dark green, with nothing else on it. I've tried safe boot, and factory reset. Has anyone ever seen this? How to fix?

⟐ Answered December 19, 2017 at 16:41 MST

Samsung Galaxy S8: Camera not working and overheating after screen repair

Mon, 27 Oct 2025 17:16:34 -0700

Hi,

I recently did a DIY screen swap of my Samsung Galaxy S8, following the guide given here. The phone was working find before the swap and now I’m having the following issues;

1/ Front and rear camera not working

2/ Iris recognition not working

3/ Overheating (heat can be felt near the power button)

I cleared the cache and data of the camera app, and restarted the phone a couple of times. I tried disassembling all the components and putting them back together. Even tried cleaning the components slightly with the use of some isopropyl alcohol. But nothing seems to work. Little bit desperate to find out what the cause could be.

I wanted to ask if anyone could help me, before I take it to a service centre.

Thank you.

Savi

The symptoms I’m seeing are;

1/ The front & rear camera are not working.

2/ In the diagnostics menu (*#0*#), everything works expect for the sensors section, and both camera. When I try to get these, the screen shows blank and freezes.

3/ LED notification indicators do not work, even when battery is low or when the phone is plugged in.

4/ When the phone is plugged into charge, it either stays on 0% or charges to 5%~6% and then starts to go back to 0%. During this time the phone (near the power button) starts to get really hot.

⟐ Commented October 27, 2025 at 17:16 MST

Samsung Galaxy S8: Lost imei and baseband after wrong firmware install.

Fri, 05 Jul 2024 05:56:44 -0700

I have a galaxy s8 european model. I tried to install different model firmware and i lost imei and baseband. Now i cant make calls and my imei number in settings is unknown. Can someone please tell me how can get it back to normal.

⟐ Commented July 05, 2024 at 5:56 MST

Samsung Galaxy S8: Sensors and iris scanner stopped working

Sat, 14 May 2022 19:13:25 -0700

It stopped working at the same time so i figured it might not be hsrdware related since they are separate hardware (iris is with front cam and sensors have their own sensory array). Everything under sensors dont give value (when using *#0*#) and iris just gave an error message (also in *#0*#). Ive done factory reset with no luck. Im out of warranty by the way since im not on the country of purchase. What would likely be the problem? Should I buy parts and replace them myself? Thanks

⟐ Commented May 14, 2022 at 19:13 MST

Samsung Galaxy S8: Can I use S8+ battery on S8?

Wed, 05 Nov 2025 17:32:58 -0700

Hi, I have an s8, and everything is awesome about it except the battery. I use it in HD+ 720p and even then i need to charge the %#*@ thing TWICE a day! i dont even talk about 1080p and 1440p. So i planned something wild to do. Can i get a galaxy S8+ battery, and put it to S8? would it fit? and more importantly what other samsung batteries are same size as S8’s but bigger capacity. and is it safe? can the phone explode? Thanks!

⟐ Answered November 05, 2025 at 17:32 MST