Some problems with microusb and fast charge

Hi, i have problems with my microusb.

2 weeks ago i wanted to change my rom and root my phone. So i have unlock bootloader with guides on this forum. After this, fast charge perfectly worked.
Now, i have tried Imperium Rom, Genesys and some kernels but fast charge don't work. And when i try to connect g4 on my pc, my pc don't recognize smartphone. There is nothing, no notification, no sound on my pc. But it charges normally.

How can i test my mucrousb? Why it charge but not fast charge and no recognized from my pc?

After trying to root kitkat, microUSB port is not working

Hi, I have the Chinese smartphone Uhappy UP920, android kitkat.

I tried to root my phone with kingoroot and all other root software before one week, without success, kingo always said "connection with servers failed, try again", I tried it two days from different libraries & I tried some software for upgrade, just to see if it is possible to upgrade to the android 5 & 6, the upgrade was refused because developer didn't make such possibility.

I don't remember from all this software if I used any software for flashing device, but here is the problem:
in one moment after trying all these software, I saw that phone battery dropped from 10% to 1% and the USB cable didn't work any more, I tried OTG cable also but the phone didn't recognize my USB device, when battery was gone/spent, I tried to use USB cable to charge the phone with my computer, but no success. I don't have ac adapter (charger), I think it would not work in any case because OTG cable is not working, not only USB cable.

battery is gone, I can't charge it with USB cable, I tried to make restart with "down volume button" and "home button", but it didn't work.
when I press Power On button, display become something like blue for a second and it is dark again. I can't start the phone.

my theory is that some software destroyed possibility for android kitkat to recognize smartphone microUSB port (for USB cable, you can see that port on the photo: https://img.fasttechcdn.com/231/2314500/2314500-9.jpg). So, maybe it is software problem, maybe hardware problem...

anyone had similar problem? anyone has a solution?

p.s. before battery was gone, USB debugging option was checked, that's requirement when I tried to root the phone, in theory I could try ADB to do something with the phone, but I don't know how to use ADB, I tried to list devices but I got everything black in the terminal, I didn't get listed my device. if you recommend ADB, please tell me what commands to use.

Samsung S6 (G920F) Microusb working only in charging mode.

Hello,

My phone can be charged though usb , but can't be used to transfer data.
If somebody can help me undestand.

PHONE IS NOT ROOTED

What i've tried:
1. Using all combinations posible with the *#0808# code.
2. Reinstalling another firmware with ODIN - XEF , BTU , etc.
3.Trying another cable/cables
4.Trying connecting to other PCs
5. Tried to connect with ADB in RECOVERY MODE
6. Tried SAFE MODE
7. Tried Debugging mode

I've used USBDeview - small utility that lists all USB devices that currently connected to your computer, as well as all USB devices that you previously used.
THE DEVICE CAN BE DETECTED IN ODIN MODE , TRIED INSTALLING VARIOUS FIRMWARES in DOWNLOAD MODE

Any advice please , post it here.

I'm disperate because i can't understand why it does work in DOWNLOAD MODE .