[BUG] [M30] USB connected/disconnected notification, Fast Charging and connection issue

[Anonymous]

Two days ago, it was all fine.

I charged my M30 till 100% as always with Fast charging enabled.

Here I am today with 7 month old M30 with
1. USB Connected/Disconnected notification flashing on screen. It came all of a sudden out of nowhere. As for now, while writing this post, it has disappeared but others issues persist.

2. Phone not detecting the charger. I have to reboot while USB cable connected to get the phone charging.

That too charges in "Cable charging Mode" which at max draws 1.8A from charger and 20 to 100% takes almost 4 hours.

Whereas in Fast charge mode it draws almost 2.2~2.4A, and same 20 to 100% used to take approx 2.5 Hours.

3. Cannot connect to PC in first go, have to reboot with USB connected.

Things I've tried -

1. Change USB cable and adapter. Tried VIVO and RealMe adapters and cables. Issue persists.

2. Clean USB port and male connector of cable with IP Alcohol and small brush to remove any moisture and dust etc, just in case.

3. Read lots of posts on this forum and tried Settings reset. It didn't work. 

4. Factory reset from recovery also didn't work. The issue persists.

I've come to the conclusion that this is either - Firmware level issue OR hardware issue.

1. For  Firmware issue to happen, it would've appeared right way when I updated to Android 10 with March Patch. It is not the case.
In case, if something triggered this behaviour it should've got reset with factory reset. That too didn't happen.

2. So, I'm thinking this is something hardware related.

The daughter board has to be removed and cleaned, or in worst case might have to be replaced.
I can't get to the Service center right now due to lockdowns in Mumbai. 

The phone is in warrenty otherwise I would've opened it myself and took a look.
Anyway before giving any d*mb solutions, PLEASE READ THE POST Completely.

POSSIBLE SOLUTION - HERE

Thanks for reading.

[samsungmaderchod]

m also same problem n my phone light on automatically if Lock phone

[anand22]

fast charging is working properly or not

[Niranjansamsung]

samsung mother **bleep**ers. They make phones and sell and earn and forget customers. Bloody looters. Thats why apple products are far bettee at quality than stupid samsung .

[Anonymous]

lmao you think apple cares about customers!

[Niranjansamsung]

I have the same issue. **bleep** make phone and create issues.

[Niranjansamsung]

Who says apple doesnt? Apple doesnt have issues. For users like me, I dont need my phone to be a horse i ride. Simple tasks like photos videos facebook instagram works fine. But about samsung, They make cheap phones and cheap everything. Apple cares about customer. apart from features apple has a the best service .

[shubham36]

Facing same issue things I have already did
1. Factory reset
2. clean ports
3. switch off and charge

[rakegks]

same problem here...
Samsung please fix issues.

[Lima7]

From last 2 days , I am facing the same issue.. USB connected/disconnected one and light is always in on mode even afer locking the phone.. 1st changer was not detected.. now all these things..

[Jatayubaxi]

I am facing same issue since 2 months. I have tried all solutions available on the Internet. No luck so far.