Galaxy S8 showing Power Sharing notification when charging, won’t charge or turn on

Today’s troubleshooting article tries to address power and charging issues on the #GalaxyS8. We also include four reported cases of these problems so hopefully you can use them as reference when dealing with your own issues.

Problem #1: Galaxy S8 Plus won’t turn on after accidental drop

Hi. I have bought my S8 plus in March and had no problem whatsoever and i took good care of my phone like always. Then one day (today) i turned it on because usually before i go to bed i always power it down. So when i turned it on it worked and everything was normal. Then an hour or two later it suddenly wouldn’t turn on and i put it on charge even though it was almost full and still no sign of a red/green light when charging. it was working fine and now i can’t see a single sign of life. i tried every single form of reset. I’ve checked for water damage although i’ve never placed water near it. I did realise one thing though. when i shake the phone i hear a rattling noise and the day before i dropped it but it was still working and not a single scratch or crack was there. I also had alot of apps but im not sure that’s the problem and im still under warranty but its doing my head in because i do not even know what has caused this and if i was being careless or this was a Samsung defect and not actually my fault. 

Solution: Like water damage, dropping an electronic device can have three possible outcomes:

  • it stops working right away,
  • it stops working or becomes problematic at a later time
  • or it works normally

If the only different thing that happened was the accidental drop, you should assume that your S8 Plus has sustained damage from that drop. A good working S8 or S8 Plus should not have any loose piece inside so we can only assume that it must be due to a broken component.

If the issue lies on the screen only, the phone should show signs of life like vibration or LED light when charging. If that’s not happening at this time, the phone is most probably dead. This must be the reason why you are unable to restart it to any boot mode.

Have the phone checked by a professional to see the true condition of its hardware. We strongly suggest that you let Samsung Service Center check your phone for this task.

Problem #2: Galaxy S8 showing Power Sharing notification when charging, won’t charge

I have a Samsung S8. Up until yesterday it charged fine, although the cable is quite frayed, it still works. Last night when I plugged it in before going to bed, I got the power sharing notification, telling me to install the app. I have read several solutions from wiping the cache to factory reset, uninstalling recent apps, cleaning charge port, and replacing the cord and charger as suggested on your site. I have done all of the above except a factory reset. The phone charges but slowly, and more often drains the battery when I plug it in, in the last 24 hours. The only other thing I can think of to do is actually replace the charge port as it is quite old and dirty. I have not had a problem before with other cords or chargers or power packs (battery meant to charge phones) but now it doesn’t seem to matter which I use it still. 

Solution: In this situation, it’s very important that you do a factory reset. Doing so will help you tell if the issue is fixable on your end. If the problem stays after a factory reset (when there are no third party apps installed), you can bet there’s hardware malfunction somewhere. It can be due to a bad charging port, Power Management IC malfunction, damaged battery, or general hardware fault. In this case, you should let Samsung check your phone.

For reference, these are the steps on how to factory reset your S8:

  1. Turn off the device. This is important. If you can’t turn it off, you’ll never be able to boot to Recovery Mode. If you are not able to shut the device off regularly via the Power button, wait until the phone’s battery is drained. Then, charge the phone for 30 minutes before booting to Recovery Mode.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  4. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  5. Press Power button to select.
  6. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  7. Press Power button to select and start the master reset.
  8. When the master reset is complete, ‘Reboot system now’ is highlighted.
  9. Press the Power key to restart the device.
  10. Check for the problem.

Problem #3: Galaxy S8 won’t turn on after do-it-yourself repair

The phone had a cracked screen, so I opened it up and took out the motherboard.  Then I heated up the screen and peeled off all the glass, and sprayed the film underneath the glass with isopropyl alcohol and cleaned it with a toothbrush.  Before applying a new glass, I put the phone back together, but after trying many different button combinations and charging it, all I could get it to do was vibrate and show a blue/red flashing light in the corner.  I don’t know what I did wrong, but any help would be appreciated.

Solution: Hardware problems are best addressed by trained professionals, especially when it comes to top-of-the-line phones like the Galaxy S8. There’s a lot of stuff that must be checked when it comes to hardware diagnostics. The best way to do that is to physically check the logic board. Since Samsung can’t obviously help you in this case, try to bring the phone to an independent technician.

Problem #4: Galaxy S8 won’t turn on after a lightning strike

I was charging my Samsung S8. suddenly there was a thunder strike and after the thunder strike tried to on the phone’s screen, but it does not respond not knowing the whole phone has shut down, since then it does not turn on, and it will not charge until I connect charger to the phone for like 3hours. That’s when it will display battery icon on the screen but yet it won’t turn the device on… Help me out.

Solution: There may be a problem with your phone’s battery. Try to see if you can make it work again first by leaving the phone charged overnight. If the phone does charge but still won’t turn on, that means the battery may be toast. If it’s not a battery problem, other hardware components may be permanently damaged. Keep in mind that fragile electronic devices like smartphones can only take so much energy. If your electrical line was hit by lightning, it may have caused a power surge that damaged your phone. Let a trained professional check the phone so the hardware is examined properly.