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Veryyy slow charging

Went to a music festival over the weekend and used a portable charger to charge my phone, this is the last time I remember my phone fully charging. Once it died and I got back home, my phone would occasionally say USB connected and not charge until it said USB disconnected. Now it doesn't say that anymore but it charges ridiculously slow...
-Overnight charging I got 40%
-Left my phone for 3 hours and got 11%
-Use my phone while it's plugging into the charger and the battery still lowers rather than charging.
I've tried putting it in Ultra power saving mode and charging it while it's off but there is no big difference, I'm mad cause this cable is supposed to be charging it super fast.. Writing this post while my phone is plugged in I've already lost 2%
Nothing is wrong with my cord or the plug I am using, it's all the same stuff I have been using before. Could there be a problem with the port or something? Helppp
My phone is also in great condition always had a case, and just got it this past April
*also my phone is rooted so I don't think I can use the warranty

viewsonic11 said:
Nothing is wrong with my cord or the plug I am using, it's all the same stuff I have been using before. Could there be a problem with the port or something? Helppp
*also my phone is rooted so I don't think I can use the warranty
Click to expand...
Click to collapse
Are you sure? Cords die easily. Can you confirm how many amps the cord and the plug are allowing to be pulled? I've seen different phones pull different amps from different cords and plugs.
You can un-root and get back to a clean phone if you want to take it back.

AnarchoXen said:
Are you sure? Cords die easily. Can you confirm how many amps the cord and the plug are allowing to be pulled? I've seen different phones pull different amps from different cords and plugs.
You can un-root and get back to a clean phone if you want to take it back.
Click to expand...
Click to collapse
How can I confirm the amps? And all I know is I've never had a problem with the chord before and I've even tried regular microusb cables that do the same thing

viewsonic11 said:
Went to a music festival over the weekend and used a portable charger to charge my phone, this is the last time I remember my phone fully charging. Once it died and I got back home, my phone would occasionally say USB connected and not charge until it said USB disconnected. Now it doesn't say that anymore but it charges ridiculously slow...
-Overnight charging I got 40%
-Left my phone for 3 hours and got 11%
-Use my phone while it's plugging into the charger and the battery still lowers rather than charging.
I've tried putting it in Ultra power saving mode and charging it while it's off but there is no big difference, I'm mad cause this cable is supposed to be charging it super fast.. Writing this post while my phone is plugged in I've already lost 2%
Nothing is wrong with my cord or the plug I am using, it's all the same stuff I have been using before. Could there be a problem with the port or something? Helppp
My phone is also in great condition always had a case, and just got it this past April
*also my phone is rooted so I don't think I can use the warranty
Click to expand...
Click to collapse
*#0228# this will show ur battery stats. Post that info. Also the is a option to reset your fuel gauge stats but I do believe you need to be fully charged for this.
The Gods Approve This Post, From The Ghost Of Sparta's S5 active.

viewsonic11 said:
How can I confirm the amps? And all I know is I've never had a problem with the chord before and I've even tried regular microusb cables that do the same thing
Click to expand...
Click to collapse
If you have tried other cables and get the same result, you may have a problem. However I have seen cords got from .44a to over 1.2a from two different phones though.
I use these to test: AboveTEK® USB Power Meter Voltage Tester Current Monitor

viewsonic11 said:
How can I confirm the amps? And all I know is I've never had a problem with the chord before and I've even tried regular microusb cables that do the same thing
Click to expand...
Click to collapse
check the power brick your using, if its the Samsung one that came with the phone it should be like 2 amps if I remember. id suggest using another power brick to test. also if you have a usb 3 super speed port on a pc or laptop sometimes you can use device manager in windows (start menu, right click computer, manage, in the window that opens click device manager, expand the universal serial bus controllers heading, check though any devices that say hub and go to their power tab) to see how many amps something is pulling from a pc usb. the other option is that you might have a defective battery but I don't know for sure. these are just some ideas that may or may not work for you.

viewsonic11 said:
Went to a music festival over the weekend and used a portable charger to charge my phone, this is the last time I remember my phone fully charging. Once it died and I got back home, my phone would occasionally say USB connected and not charge until it said USB disconnected. Now it doesn't say that anymore but it charges ridiculously slow...
-Overnight charging I got 40%
-Left my phone for 3 hours and got 11%
-Use my phone while it's plugging into the charger and the battery still lowers rather than charging.
I've tried putting it in Ultra power saving mode and charging it while it's off but there is no big difference, I'm mad cause this cable is supposed to be charging it super fast.. Writing this post while my phone is plugged in I've already lost 2%
Nothing is wrong with my cord or the plug I am using, it's all the same stuff I have been using before. Could there be a problem with the port or something? Helppp
My phone is also in great condition always had a case, and just got it this past April
*also my phone is rooted so I don't think I can use the warranty
Click to expand...
Click to collapse
Sounds like the portable charger might have been able to adjust amperage or voltage. If that's the case the portable charger could have damaged your battery if it was wrong amp and too high of amps. I have a portable charger that even changes voltage that could ruin a device too if not on 5 volts.
Sent from my SAMSUNG-SM-G900A using XDA Free mobile app

It sounds like it could be a battery problem. More likely, it could be a problem with the software. I would back everything up and flash another ROM or bring it back to full stock.

Option 1:
Install this app https://play.google.com/store/apps/details?id=ccc71.bmw
It will tell you batter voltage and charging current.
Options 2:
Charge with phone powered off.

Thank you everyone for the replies, my phones been getting worse to the point where it sometimes wont charge.
I think what im going to do is flash back to stock and bring it in to samsung or something , but also i heard a rumor that towelroot doesnt void the knox warranty? if this is true i may just bring it in as is...only becuase when i connect my phone my laptop wont read it anymore either, i havent tried if odin will but im assuming it would, i just dont want my phone to end up bricking because of the bad connection

This sounds like an old problem with Samsung phones, including the Galaxy S series. My original Galaxy S did this, my S3 did this, my sister's S3 did this. On those phones it was the charging port that caused the problem. My sister had her port replaced and her phone is working fine again.
Although I don't know for sure if that's your problem, that would be my first guess.
Sent from my SAMSUNG-SM-G900A using XDA Premium 4 mobile app

Opie Knievel said:
This sounds like an old problem with Samsung phones, including the Galaxy S series. My original Galaxy S did this, my S3 did this, my sister's S3 did this. On those phones it was the charging port that caused the problem. My sister had her port replaced and her phone is working fine again.
Although I don't know for sure if that's your problem, that would be my first guess.
Sent from my SAMSUNG-SM-G900A using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Yeah I'm pretty sure it has to do with the charging port, my battery is fine and so are my cables, and it randomly keeps saying USB connected/disconnected and won't change when it's "connected"
Sent from my SAMSUNG-SM-G900A using XDA Free mobile app

Fast charging

Is there a set of rules that it follows before fast charging works? I'm not sure if it's that or my phone or charger is bad..
Seem like I can only get it working 30% of the time. I would have to unplug and plug in multiple times before the notification pops up saying fast charging.
I tried multi USB cables and pushed it all the way in the charger.

I haven't managed to look at kernel source yet (not yet released), but maybe charge type is not only dependant on charging source type, but current battery level. ie top off charging. Just guessing for the moment............

I have the same issue. The quick charging notification never pops up the first time. If I unplug the cable and plug it back in, then it's fine. I'm using the wall plug and cable provided by Samsung.
Sent from my SM-N920T

Don't know. I've only charged my phone 2x, but fast charging popped up both times.

crawldit said:
I have the same issue. The quick charging notification never pops up the first time. If I unplug the cable and plug it back in, then it's fine. I'm using the wall plug and cable provided by Samsung.
Sent from my SM-N920T
Click to expand...
Click to collapse
I take it you got the sprint note 5? I just went and exchanged for a new one. Its giving me the same problem

sheryip said:
I take it you got the sprint note 5? I just went and exchanged for a new one. Its giving me the same problem
Click to expand...
Click to collapse
Actually no, I bought the T-Mobile version. I doubt it matters but it's the 64gb model. It sucks that you exchanged yours and have the same issue.
Sent from my SM-N920T

I picked up the AT&T model yesterday. Plugged into my car charger, 2amp, works fine. Got home and plugged in before bed with samsung supplied charger, showed fast charging. Passed out and woke up to 40% battery this morning. Turns out it will connect fast charge (ONLY if i use the supplied brick AND cable), but cuts out after about 5 mins! If i use the 9v brick with a random cable, it will just say cable charging, but seems to be decently speedy and won't stop charging. Seeing how crawldit replaced his and has the same issue leads me to think Samsung really was hoping people would get the wireless pad. Hopefully its a minor software update/patch needed. Phone is a freakin winner on all other aspects. Battery life appears to be better than the note 4 even with a slightly lower mah.

Definitely a software issue IMHO, from the sound of it. Also, on my VZW 32gig I do not have this issue. Every time I plug it in (to the supplied charger) it fast-charged. Cant say if it gives the message every time though, but I know it fast-charges because its never on that charger more than 15-30 minutes and the charge jumps massively. But even on a normal charger it still charges fairly quickly.

Well... turns out my brick was bad, used the one from my Note 4 with the new note 5 cable and it works like a charm. I'd recommend checking out a new brick.

Glad you got it figured out. Mine works fine now as well. I don't know if everything was overly stiff from being brand new, but after a day or two the fast charge pops up the first time every time now.
Sent from my SM-N920T

Question about fast charging on the Note 9

Hi...
For a while now I've had a problem with my Note 9 only displaying that it is regular charging when plugged into my fast charger plug and cable. I tried a numbr of troubleshooting steps from restarting, cleaning the port, trying safe mode, buying replacement fast charger and cable, factory settings, rooting but it still only showed as cable charging so I became convinced it was a physical problem with the port. Wireless fast charging continues to work as it should.
I recently installed AccuBattery and when plugged into my fast charger/cable, the charge current completely fills the the green bar to between 1800-2000 mA so now I'm beginning to wonder whether fast charging is working ok, but the phone is reporting it incorrectly.
Does anyone else know what kind of charge current the Note 9 should have when cable fast charging please? Also, just out of curiosity, what should it be when wirelessly fast charging too please?
Thanks for any help...

nickster_uk said:
Hi...
For a while now I've had a problem with my Note 9 only displaying that it is regular charging when plugged into my fast charger plug and cable. I tried a numbr of troubleshooting steps from restarting, cleaning the port, trying safe mode, buying replacement fast charger and cable, factory settings, rooting but it still only showed as cable charging so I became convinced it was a physical problem with the port. Wireless fast charging continues to work as it should.
I recently installed AccuBattery and when plugged into my fast charger/cable, the charge current completely fills the the green bar to between 1800-2000 mA so now I'm beginning to wonder whether fast charging is working ok, but the phone is reporting it incorrectly.
Does anyone else know what kind of charge current the Note 9 should have when cable fast charging please? Also, just out of curiosity, what should it be when wirelessly fast charging too please?
Thanks for any help...
Click to expand...
Click to collapse
I know this is ridiculous question. Did you enable it in battery setting?

nickster_uk said:
Hi...
For a while now I've had a problem with my Note 9 only displaying that it is regular charging when plugged into my fast charger plug and cable. I tried a numbr of troubleshooting steps from restarting, cleaning the port, trying safe mode, buying replacement fast charger and cable, factory settings, rooting but it still only showed as cable charging so I became convinced it was a physical problem with the port. Wireless fast charging continues to work as it should.
I recently installed AccuBattery and when plugged into my fast charger/cable, the charge current completely fills the the green bar to between 1800-2000 mA so now I'm beginning to wonder whether fast charging is working ok, but the phone is reporting it incorrectly.
Does anyone else know what kind of charge current the Note 9 should have when cable fast charging please? Also, just out of curiosity, what should it be when wirelessly fast charging too please?
Thanks for any help...
Click to expand...
Click to collapse
Rosli59564 said:
I know this is ridiculous question. Did you enable it in battery setting?
Click to expand...
Click to collapse
I started charging at 25%. With screen on I got 2700mah.
I left my phone off for 15 mins and stayed at that 2700mah average.
When I turned my phone screen on, I had 45% but screen on charge dropped to 1000mah.
If you look at the bottom of my screenshot, it explains why you need to turn your screen off to get accurate fast charge Numbers. Your phone might throttle the screen on charge if a certain criteria is met.

Once again. Did you enable it in the settings?
I am eagerly awaiting your response... [emoji3]

Rosli59564 said:
I know this is ridiculous question. Did you enable it in battery setting?
Click to expand...
Click to collapse
Thanks for the reply...fast charging is indeed enabled :good:

Frick_trump said:
I started charging at 25%. With screen on I got 2700mah.
I left my phone off for 15 mins and stayed at that 2700mah average.
When I turned my phone screen on, I had 45% but screen on charge dropped to 1000mah.
If you look at the bottom of my screenshot, it explains why you need to turn your screen off to get accurate fast charge Numbers. Your phone might throttle the screen on charge if a certain criteria is met.
Click to expand...
Click to collapse
Thanks for the reply.
Hmmm the numbers you get do seem to suggest there is an issue with my phone. The screen off speeds are around the same as screen on.
Samsung quoted about £10,000,000 to repair as it's rooted and they have to replace the entire board to satisfy their warranty terms.
May have a go at replacing the charging port myself.
Thanks again :good:

nickster_uk said:
Thanks for the reply.
Hmmm the numbers you get do seem to suggest there is an issue with my phone. The screen off speeds are around the same as screen on.
Samsung quoted about £10,000,000 to repair as it's rooted and they have to replace the entire board to satisfy their warranty terms.
May have a go at replacing the charging port myself.
Thanks again :good:
Click to expand...
Click to collapse
I don't use fast charging, ever. So that's probably why my port still works. I have gotten so much dirt in it and cleaned it out it isn't even funny. So I'm less 6 to believe that fast charging is what ruins the port not debris.
A lot of people who use fast charging have the same issue as you-,it burns out the port.
Honestly, my advice is to love with fast charging over wireless and not spend a billion dollars replacing the port. Wait until it's time to replace the battery in a year or two and do it then. Fast charging over cable only saves you 30-40 minutes. I can charge and do charge my phone normally and it only takes around an hour and 40 minutes.

Battery/Charging issue

Hey everyone, how y'all doing?
I've got this problem for 2 months now where the charging has been super slow and no idea why. I am using the official charger and cable that came with the phone, I used my wife's s20's charger with same result and a third party charger with 3 different cables with similar results. Accubattery recorded that my phone's battery health is at 86% (3460mah) should I change it and lose my water/splash proof?
Oh yes I have flashed a few different ROMs (currently using Dr Ketan) with the same results except for evolution ROM, with the aosp ROM I was able to charge my phone from 14 percent to 100 in 90 minutes which is kinda weird...
Any advice would really help thank you

Supracer said:
Hey everyone, how y'all doing?
I've got this problem for 2 months now where the charging has been super slow and no idea why. I am using the official charger and cable that came with the phone, I used my wife's s20's charger with the same result and a third party charger with 3 different cables with similar results. Accubattery recorded that my phone's battery health is at 86% (3460mah) should I change it and lose my water/splash proof?
Oh yes I have flashed a few different ROMs (currently using Dr Ketan) with the same results except for evolution ROM, with the aosp ROM I was able to charge my phone from 14 percent to 100 in 90 minutes which is kinda weird...
Any advice would really help thank you
Click to expand...
Click to collapse
Get yourself one of those 2$ USB doctors. It will tell you how much power the phone is taking in. i.e. Fast charge should be 9 volts at about .8 amps and slow charge 5 volts at 1.5+ Amps.
Make sure your port is clean and moisture levels are low i.e should be below 80%.
I had this problem once when moisture was over 80%. It then went away. But at that time the phone will warn you about the extra moisture. It will say Moisture detected in USB port Fast Charging disabled.
The second time this happened was after the update to android 10. Had slow charging and overheating and audio acting up but that went away after re-setting the phone a few times and clearing cache.
The latest update to Android 10 seems to be causing a lot of issues with Display, Audio and overheating / slow charging. My audio chip finally stopped working. And the phone is now with Samsung.
My 2 cents if you see overheating and slow charging. Stop using the phone while its still working and take it to Samsung. Because if you continue to use it something will fail. And Samsung will want to give you a big fat bill to change it.

RonChinoy said:
Get yourself one of those 2$ USB doctors. It will tell you how much power the phone is taking in. i.e. Fast charge should be 9 volts at about .8 amps and slow charge 5 volts at 1.5+ Amps.
Make sure your port is clean and moisture levels are low i.e should be below 80%.
I had this problem once when moisture was over 80%. It then went away. But at that time the phone will warn you about the extra moisture. It will say Moisture detected in USB port Fast Charging disabled.
The second time this happened was after the update to android 10. Had slow charging and overheating and audio acting up but that went away after re-setting the phone a few times and clearing cache.
The latest update to Android 10 seems to be causing a lot of issues with Display, Audio and overheating / slow charging. My audio chip finally stopped working. And the phone is now with Samsung.
My 2 cents if you see overheating and slow charging. Stop using the phone while its still working and take it to Samsung. Because if you continue to use it something will fail. And Samsung will want to give you a big fat bill to change it.
Click to expand...
Click to collapse
Thanks for the advice and I'll see to it. It's just yeah it seems like after android 10 things have been degraded

So apparently turning off fast charging in options gives me a faster charge time. With fast charge on it takes from 7% to 100% in 3 and a half hours and with fast charge off it takes 2 hours only.... Maybe my fast charging "chip" / "module" is broke?

Supracer said:
So apparently turning off fast charging in options gives me a faster charge time. With fast charge on it takes from 7% to 100% in 3 and a half hours and with fast charge off it takes 2 hours only.... Maybe my fast charging "chip" / "module" is broke?
Click to expand...
Click to collapse
Have you tried installing the stock OS back onto your device?

iceepyon said:
Have you tried installing the stock OS back onto your device?
Click to expand...
Click to collapse
Yes I have tried, the June update one and got the same results. I even formatted everything and went bone stock with the same results. I'm thinking of using some contact cleaner on the usb port but hesitant to do that...

Supracer said:
Yes I have tried, the June update one and got the same results. I even formatted everything and went bone stock with the same results. I'm thinking of using some contact cleaner on the usb port but hesitant to do that...
Click to expand...
Click to collapse
Unless you see something in there I do not advise poking around inside.
I suspect your problem is that the Samsung USB cable packed up. And your trying with all kinds of cables and chargers. Go to a Samsung Store and ask them to check with a Samsung Cable and Charger.
I went thru this circus a few months back.
The only solution is to get a Samsung Charger with a Samsung Cable.
Then make sure fast charge is on. For wireless and wired charging. Wipe your cache and you should be ok.
I have seen way too many damaged USB ports from people trying to clean it. When there was nothing in there to start with. Use compressed air. If you see something in there.

Fast charging issue

So my note 9 (snapdragon) is never using fast charging and even if i manage to get it to give me fast charging it gives 1 hour 39 minutes to charge and takes 3 hours, when i charge by cable charging with disabling the fast charging setting it charges in 2 hours 10 minutes while it is cable charging not giving me fast, with the setting enabled it charges in 1 hour 59 minutes.
One side of the type-c never gives fast charging and the other side writes fast charging for 4-5 seconds then switch to cable charging and rarely doesn't switch but the charging time is 3 hours as i mentioned.
I tried everything possible other than trying to flash another software it is with the stock but unlocked.
I cleaned the socket, used 10 different chargers with different cables, wiped cache and tried safe mode and more.
Sorry for making it a long post but this problem is driving me crazy and i want to know can it be software issue not hardware because the phone is used for 2 months and the socket can't be cleaner, and if i flash the stock rom again will it be locked by T-mobile and i would need to unlock it again?
Thanks alot.

First of all, try to change the cable that 98% of the time is the problem when having these types of issues . Then consider the fact that the battery's temp influences the time needed for charging so if it's hot, software will decrease power in charging so that will give a longer time to charge. Even using the phone while charging or leaving apps in background will extend time for charging.

I have posted this so many times.
Samsung uses cheap USBc connectors that short out. Once you lose FC the only way to get it back is so get a new USBc installed by Samsung or a third party. This happened to me about 4 months after I got phone. I never fixed but I will never buy Sammy again. Its not your cables, its not the power cube, its the connector on the actual phone.

TokedUp said:
I have posted this so many times.
Samsung uses cheap USBc connectors that short out. Once you lose FC the only way to get it back is so get a new USBc installed by Samsung or a third party. This happened to me about 4 months after I got phone. I never fixed but I will never buy Sammy again. Its not your cables, its not the power cube, its the connector on the actual phone.
Click to expand...
Click to collapse
In every case, better Sammy's phone USB c connector then iPhones phone lightning connector because after a year you can't even charge the phone at all for having intermittent false contacts when you plug in the cable for the phones connector going bad....

TokedUp said:
I have posted this so many times.
Samsung uses cheap USBc connectors that short out. Once you lose FC the only way to get it back is so get a new USBc installed by Samsung or a third party. This happened to me about 4 months after I got phone. I never fixed but I will never buy Sammy again. Its not your cables, its not the power cube, its the connector on the actual phone.
Click to expand...
Click to collapse
It's possible the the USB C connection is faulty, it's also possible it's a faulty charger cable or even a faulty charger .
Eliminate one by one, buy a good USB C cable to check if that cures the problem, it often does.
Whilst as Tokedup says it may be the usb socket in the phone as according to his post he didn't fix the problem it's not possible to conclusively determine the cause.
It's unlikely to be caused by software, but high ambient or high battery temperature will lead to charge rate reduction
Maybe try an app like accubattery, this will show the charge rate in mA.
With a genuine charger and cable fast charge will reach a maximum of 2800mA
https://play.google.com/store/apps/details?id=com.digibites.accubattery

joedellosso69 said:
First of all, try to change the cable that 98% of the time is the problem when having these types of issues . Then consider the fact that the battery's temp influences the time needed for charging so if it's hot, software will decrease power in charging so that will give a longer time to charge. Even using the phone while charging or leaving apps in background will extend time for charging.
Click to expand...
Click to collapse
Well i tried everything you said with no success.
The problem is the phone isn't fast charging at all.
I believe it's the phone socket actually.
Thanks anyways

TokedUp said:
I have posted this so many times.
Samsung uses cheap USBc connectors that short out. Once you lose FC the only way to get it back is so get a new USBc installed by Samsung or a third party. This happened to me about 4 months after I got phone. I never fixed but I will never buy Sammy again. Its not your cables, its not the power cube, its the connector on the actual phone.
Click to expand...
Click to collapse
I think you are right but i didn't want to believe it because i am not going to change it and risk opening my phone i can try and live with that.
Thanks

paul_59 said:
It's possible the the USB C connection is faulty, it's also possible it's a faulty charger cable or even a faulty charger .
Eliminate one by one, buy a good USB C cable to check if that cures the problem, it often does.
Whilst as Tokedup says it may be the usb socket in the phone as according to his post he didn't fix the problem it's not possible to conclusively determine the cause.
It's unlikely to be caused by software, but high ambient or high battery temperature will lead to charge rate reduction
Maybe try an app like accubattery, this will show the charge rate in mA.
With a genuine charger and cable fast charge will reach a maximum of 2800mA
https://play.google.com/store/apps/details?id=com.digibites.accubattery
Click to expand...
Click to collapse
I already tried alot of cables and chargers so i am sure it's not one of them and now i am nearly certain it's the socket since you said it's unlikely to be a software issue, but i really wanted to know what could've caused it because i am sure i didn't do anything wrong.
I have been monitoring accubattery for a month now everytime i charge the phone. The mA is always between 800-1200mA and the phone takes nearly 2 hours to charge.
Thanks alot mate

just to be sure that it is not software related, remove all the battery optimization related 3rd party apps. clear cache and test the phone with stock usb cable and charger that came with the phone. what i had experience is that my note 9 SM-960F is sencitive to charger. if i use a third party fast charger or cable, it give me some sort of trouble like overheating or slow charging. so make sure you are using stock charger and cable that came with phone.

Munawar Mehmood said:
just to be sure that it is not software related, remove all the battery optimization related 3rd party apps. clear cache and test the phone with stock usb cable and charger that came with the phone. what i had experience is that my note 9 SM-960F is sencitive to charger. if i use a third party fast charger or cable, it give me some sort of trouble like overheating or slow charging. so make sure you are using stock charger and cable that came with phone.
Click to expand...
Click to collapse
I wiped data factory reset and cleared cache and tried safe mode so i don't think it's any of that.
the last try will be flashing the stock rom again but i am hesitant because i am afraid the phone will be locked again by T-mobile and i won't be able to unlock it
Thanks

Why not get a Samsung wireless quick-charger and try it?

A wireless charger will not be faster than cable charge but I would get one so you don't wear out that port to where it doesn't interface with a computer if needed in the future. Btw all my new phones thats the first thing I turn off is fast charging it degrades battery more over time.

TokedUp said:
I have posted this so many times.
Samsung uses cheap USBc connectors that short out. Once you lose FC the only way to get it back is so get a new USBc installed by Samsung or a third party. This happened to me about 4 months after I got phone. I never fixed but I will never buy Sammy again. Its not your cables, its not the power cube, its the connector on the actual phone.
Click to expand...
Click to collapse
When I purchased my note 9 I did a post somewhere where I said the weakest link in this phone is the Charging port. And so right from the first week I got a wireless charging pad.
Also during the rainy season I keeps saying there is moisture in the port. Basiclly god help you if you live in a place with high humidity.
Like you this is the last Samsung Note I will buy in this life. My Audio packed up after the update. I suspect the over heating caused this. And their support is outsourced in India so they don't give a hoot about your issues.
To the OP.
Try a wireless charger if that fast charges Then you know its a port issue. If that also does not fast charge then its a chip / board issue.
I predict all note 9 users are going to see more and more problems as the over heating causes components to start to fail.
You can get a new USB port with flex cable for like 4$ on ali express go for it.