I have the same problem with the phone not being recognised by the computer or charger. Strange thing is that the computer recognises the phone in download mode via odin (an kies for a while). And it has been charging while in download mode connected to kies or odin.
I initially thought it was a bad third party rom i had downloaded and tried to change to another rom. It was back to charging for a bit and then after a day stopped again. Tried to reset to factory rom and bricked the phone in the process (as stupidly checked reactivation lock and clicked a wrong button when titanium backup asked if I wanted to restore the previous id - spent 2 days to unbrick it.....
But now I'm back to the phone not being able to charge or being recognised by the computer. Even the OTG cable isn't recognised. HELP pleaseeee someone. First issue with a Galaxy since the S3/S4/Note1/Note2.
Any thoughts as to what the issue could be? Someone mentioned that it could be a setting in phoneutils menu (if USB set to modem it wont recognise - has to be set to PDA). But the *#7284# command doesnt seem to work on the Note 3. Does anyone know how to invoke the phone utility menu?
I might have to take it back to Samsung - only that I have rooted it and knox shows it!!
I sent the device into the service centre this morning and explained the problem. The guy at the counter didn't bat an eye while telling me its likely a usb port problem and that he would try to check it and get it turned around within a day. When I asked him if others had similar problems, his response seemed to indicate that it wasn't an uncommon problem. They even had plenty of spares for the port.
I got a text within 2 hours telling me that the unit was fixed. They didn't give me any hassle about the unit being rooted but I guess with a hardware issue, it shouldn't have mattered anyway.
So far so good with the unit. Just thought I'd update you guys.
Galaxy S4 / Note 3 LTE/ Note 8 / Nexus LTE