Galaxy Note 8, battery draining fast (while screen off) + NFC not working + WIFI disconnect suddenly

[Syrianknight91]

Hi,

After the final update the subject problems I am facing, which is really annoying.

I tried many solutions such as soft reset, hard reset, clear caches, but I can only say that the update caused these problems together..

Information of my phone are attached. 

[Alphazor007]

I had the same problem with my old phone. I had to downgrade the android version to the version before the faulty update. This can be done easily by installing the right OTA update pertaining to your model. I recommended that you take your phone to the Samsung service center to avoid the bricking of your phone. hope this helps...

[Alphazor007]

https://www.getdroidtips.com/downgrade-galaxy-note-8-oreo-nougat/

This link shows how you can downgrade your android version. I cannot guarantee that this will work. its worth a try if you really need to use your phone like before.

[Alphazor007]

You current version ( Android 9 ) is pretty old and has had a lot of support and updates in the past. The problem might be due to improper installation, quite rare , but is possible. I hope you solve your problems..

[Syrianknight91]

Just for update, nfc issue was solved by itself in the last update so i am pretty sure it was due to software updates issue. Anyway, i spent like 6 months suffering from nfc issue and i bought s22 ultra