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[Q] usb device not recognized?

Hopefully a simple fix.. When i plug my unlocked captivate in my computer reads usb device not reognized? So then i went thru to try and format this brand new card and it wont let me select format? Im not sure what to do and am stumped. an help would be appreciated

try a different cable. for some reason mine gets recognized about once out of 50 tries with the cable that came with the phone but when i use a different one it works every time.

tried 2.. no change.. more info.. when i plug the usb in.. it says select usb mode..kies, media player, mass storage or pc internet.none seem to make a difference. but it does seem to let me format the card and does make it appear available in the sd card and phone storage?? its very confusing..

I ran into a similar problem 2 days ago. My phone was fine for 30 days and then all of a sudden the usb port crapped out on the phone. I had tried multiple pc's, my mac which doesnt require drivers and then a trip to the AT&T store. Those idiots were a waste of my time but tried to connect it to a box for sucking down phone numbers and it wouldn't connect to to the phone either. I am not sure if its a problem from a rom I installed but sorry to say they are sending me a replacement phone tomorrow.

I wouldnt have belived it but a co-worker said try a different usb plug on my computer.. Im glad it fixed it.. a little humbled but im posting just because it may happen to someone else. Whats weird is the usb port works with every other device?? strange but true story thanks for the responses...

yeah none of my usb ports in front of the comp worked, tried back usb ports and had no issue, also keep in my i had drivers installed before hand.
win 7 x64

all of a sudden i cant get my PC to see my captivate, at all. So now I cant do Odin! tried all the ports and also another computer. Ideas anyone?

Captivate Cant Connect with USB

I've looked everywhere and cant seem to find an answer, so i figured i'd start a new thread.
My captivate used to connect to my computer just fine, but there was another computer it would just NOT connect too! Well, after a few months, it stopped connecting to my home computer as well.
I have USB debugging on, the phone is rooted and everything. When I plug it in and mount the USB drives, i get drives J and K on my computer, one for the internal storage, and one for the SD card i have in the phone.
When double clicking any of those drives, it just sits there and reads forever without ever doing anything. I can use the SDK to run "adb devices" and it see's the phone, Odin One Click finds the phone but freezes on reading file line, or just fails all together.
Any ideas?

Try reinstalling the samsung usb drivers and restart your computer, that'd be my first step.
Sent from my SAMSUNG-SGH-I897 using XDA App

You have to be on the touch wiz home screen if you're trying to connect to Kies, otherwise turn on USB debugging and you should be good to go
Sent from my SAMSUNG-SGH-I897 using XDA App

SeenNotScene: I've uninstalled, rebooted, re-installed several times. I've been having this problem for a couple months now and i've tried everything i can think of. It doesnt work
bkhams: I dont even know what Kies is? I always have USB debugging turned on, and once connected i bring down the drop down menu and mount the USB so i can access my phones files as if they were another drive.

I had the same problem, and Samsung peeps told me I had to use the USB cable that came with the phone, low and behold they were right. Connected right away with the USB that came with the phone, could that be your problem?

I had the same problem in the past and it was actually a hardware problem with the Captivate and not anything with the computer. I ended up taking the phone in and they exchanged it for me.
I do not know if yours could be having the same problem, but that was my experience. Frustrating, to say the least.

Hmm... Could be the hardware i guess.. I know its not the cable though because i've only ever used the cable that came with it.

Have you tried connecting to the USB port directly off the motherboard? My connections were "sketchy" at best when using the ports of the top of the computer case. Once I connected directly off the MOBO, zero problems since.

Sloved!
axis01 said:
Have you tried connecting to the USB port directly off the motherboard? My connections were "sketchy" at best when using the ports of the top of the computer case. Once I connected directly off the MOBO, zero problems since.
Click to expand...
Click to collapse
Thank you for suggestions! My front USB connector is probably connected to some internal HUB, not going straight to the motherboard and wont work. Connecting directly to MB USB solve the problem. I am a little bit surprised... but whatever - M$ bull*hits. I spend couple of hours yesterday to find out whats going on. Thank you again!

[Q] Usb port issues

hello ,
let start off by saying i liked this phone until i started having problems with it ..
so a few months ago i after the usb port not working as a (media device) with cm10.1 &10.2 for a year delt with it ... i have no mtp or ptp options not even upon plugging it in dose not even acknowledge it just beeps then windows 7 usb device not recognized until i re flashed jb 4.1 and it worked again windows 7 seen it as a media device and i was able to tether until a few days ago and it with no warning it will not let me see it kies dose nothing just says usb device not recognized and dose the same as it did with cm10.1 i have flashed and wiped a few times no change i would like to tether and get my files on and off my wife has the same phone no issues ..??? but what i don't understand how can it work well for a few months then not ..? can the mount points in the phone get corrupt ? seems like its just the phone because my wifes tethers just fine mine wont she is stock jb .. i have a rooted jb .. thats it can the usb port just fail .?
when i plug it in it just goes strait to charging on pc and beeps thats it .. tried different usb cords and computers the same thing

The USB port could be damaged or dirty. What happens if you plug the cable into the phone, apply gentle pressure on it towards the back of the phone (Or the front) and then plug it into the computer? Does it start to work so long as the cable is held? If so I would guess the USB port may have developed some bad solder joints.

yeah tried everything
Jax184 said:
The USB port could be damaged or dirty. What happens if you plug the cable into the phone, apply gentle pressure on it towards the back of the phone (Or the front) and then plug it into the computer? Does it start to work so long as the cable is held? If so I would guess the USB port may have developed some bad solder joints.
Click to expand...
Click to collapse
it just charges but wont recognize anything sorta been like that since i first owned it .. its been spotty but now nothing at all .. thinking about replacing the usb port in the phone seen that egay sells em for 10 bucks .. i do have insurance on it still thinking about doing a replacement

Asus Sl101 Debugging Mode problems

Hello there
Ive got a problem. I wanted to Root my SL101 (Firmware 4.0.3 Android) with Peri or THe 1 Click Solution. But the original usb cable only charged my device when I plugged in to power socket. BUt USB on PC didnt work. PC never found device, didnt search for driver and no "BLing" for USB device plugged in. So I ordered a new usb cable (not original, cause asus sl101 already 3 years old). The new cable worked. USB found on PC. Data transfer worked. Charinging over power socket worked, but no charging when connected to pc. When I enabled USB Debugging, it said "Device removed" and then "device started". But there was no deivce seen on computer. No "internal storage". So there is no possibility to transfer data and Root won't start cause it doesnt find device. I installed all driver (ADB driver, also tried Asus Pc Suite), but it doesnt work. Is my device broken or is it because of the cables? Are there any working cables on internet with better quality and supporting USB Debugging? The non original cable is from vhbw.
Is this a common problem with Asus Sl101? I searched for related problems. SOmeone also had problems with Asus original cable. It also charged plugged in to power socket but not with PC and Pc never fund USB conection, never searched for drivers. He ordered a new cable (original, cause his case was years ago) and it worked.
Any ideas how to get it work? Its not really important to root it though, but I wanted to buy Titanium Backup so I can save my apps, and I need root for it. There are f course plenty other apps needing root. Any advices?

Not sure about the data transfer error apart from lack of drivers, but the PC will not charge the tablet while it is running - at least for the TF101 anyway, the only way to get the PC to charge it is to either turn it off while its plugged into the PC and leave it overnight for trickle charge, or I think also if the tablet is in sleep mode, it will also trickle charge - but you have to use the main charger to get a fast charge into it - PC will only trickle charge

*Detection* said:
Not sure about the data transfer error apart from lack of drivers, but the PC will not charge the tablet while it is running - at least for the TF101 anyway, the only way to get the PC to charge it is to either turn it off while its plugged into the PC and leave it overnight for trickle charge, or I think also if the tablet is in sleep mode, it will also trickle charge - but you have to use the main charger to get a fast charge into it - PC will only trickle charge
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Click to collapse
First of all, thanks for answering. I tried it, but when I plug in USB, Asus SL101 turns on. I won't charge turned off. It turns on automatically when I plug in USB to charge. And when its turned on plugged in on PC USB, as I explained before, it won't charge.
Somene know where I can get a working cable? Maybe an original working one? Asus SL 101 is maybe 2 or 3 years old know. Shouldnt there be still original ones left in shops? Actually it doesnt have to be an original one. A working one is fine, too. (Working means for me: USB, Charging, USB Debugging). So anyone knows good stores/internet offers (amazon, ebay...) for sl101 cables? Cause I really dont know which one is a good one.

Plug it in to USB and then turn it off, you won't see it charging, it is a very very slow process when you charge from PC (If it works the same as the TF101) - leave it overnight plugged in and turned off
Sounds like your cable is working fine, you get a data connection with USB debugging - so data side of the cable works, and you get a charge when you plug it into the charger, so power side of it is working too
It's likely drivers stopping you using the media transfer mode
eBay would probably be your best bet if you want another one
asusparts.eu sell some stuff too - fits SL101
http://www.asusparts.eu/en/Asus-KIT-AC-TF101

Ya actually I didnt want to complain. The cable really works fine, but I cant root cause USB Debugging Mode is found by PC, but showing no storage icons on computer. So Root Software dont find device and no data transfer works while it is in debugging mode. Could it be because of my device? Actually it was from germany and the firmware also was DE. But for updates, I had to change it to WW code. Maybe its cause of firmware. I really dont know. Its strange cause for everyone it works, only for me it doesnt work. So original cable was to begin with not working on usb pc. So I hoped the fake one would work full. *sigh*
Thanks for the link. I searched for only the cable (on the given link) and I found it without adapter. But its a pity, Im in germany and if they send the cable to me, I have to pay 46$ for the cable. For US people its 25$ (cause they dont have to pay oversea sending costs). If its also not working, so it would be a problem.. even warranty is expensive (sending back ~20$).
Is there a way to downgrade SL101 from 4.0.3 to Firmware Version 3.2 without using USB Debugging and root?

Case closed, Watson (I always wanted to say that)
I found the error. The cable is working now and USB Debugging working, too. Root was successful. I opened device manager and deleted Asus Epad Sl101 driver and plugged sl101 in. So windows had to search for drivers and it installed the right drivers. I dont know why preinstalled ADB Drivers didnt work, but now everything works.
Thanks for your effort

Great, yea sounded like a driver problem, pleased you got it working :good:

USB Device not recognized / No fast charge

So I've had my S7 for around two months now, and all of a sudden fast charging just stopped working. Thought, oh, must be using the wrong cable (have loads of them micro USB cables floating around)
Now I'm certain I'm using the official Samsung fast charge plug and cable that came with the phone, and still no fast charge. When I try to plug into my Windows 10 Desktop or Laptop I have a message that says the device can't be recognized
Phone has already been rooted and flashed with a custom rom. Didn't think that was the issue as it wouldn't even show the mounted storage in TWRP, or identify the phone in ODIN.
Now I've flashed back to the stock rom that I made a backup of when I had the phone, and I still have the same problem!! Can't access internal / external storage using the supplied USB cable and can't fast charge.
I'm thinking the USB port on the device is just knackard.. but really, I've looked after it so well I fail to see how this could happen, unless it's a common fault.
Might just get a wireless fast charger, but do you guys have anything else I can try before giving up on the USB connectivity?
Cheers

try to connect to a different pc, if same it means your usb connector is faulty

Sounds more like the cable is bad tbh, you won't get fast charge from a PC USB port, only from the Samsung charger
But if the device isn't recognised by the PC, and won't fast charge from the charger, the common thing between them is the cable
Possible it's the phone USB port, but more likely the cable is bad
Afaik certain cables can not fast charge either, so chances are the ones you have lying around that are not the official cable can not support it
Genuine Samsung USB cable is white with the USB port symbol on both ends and the phone end has two small ridges to grip when inserting and removing it, should help identify it

Yep I'm using the official cable and fast charger
I'm trying to fast charge via the fast charger and not USB. Only trying USB to access the internal / external storage.
Tried on my desktop and laptop and both have the same issue where my old HTC m8 connects without any issue.

clownstyle said:
where my old HTC m8 connects without any issue.
Click to expand...
Click to collapse
With the same cable?

*Detection* said:
With the same cable?
Click to expand...
Click to collapse
To fast charge I've tried the original Samsung cable with the fast charge plug.
To connect to the PC I've used x3 different cables that all work with my HTC one m8. With all of them I get device not recognised. Already tried installing Samsung switch and reinstalling drivers which didn't work.

clownstyle said:
To fast charge I've tried the original Samsung cable with the fast charge plug.
To connect to the PC I've used x3 different cables that all work with my HTC one m8. With all of them I get device not recognised. Already tried installing Samsung switch and reinstalling drivers which didn't work.
Click to expand...
Click to collapse
I mean for the HTC, does the Samsung fast charge cable work to connect to the PC?
Does sound possible the phones USB port is faulty if you can't get any connection at all to the PC with multiple cables
Try changing the USB mode in developer options
Networking > Select USB configuration

*Detection* said:
I mean for the HTC, does the Samsung fast charge cable work to connect to the PC?
Does sound possible the phones USB port is faulty if you can't get any connection at all to the PC with multiple cables
Try changing the USB mode in developer options
Networking > Select USB configuration
Click to expand...
Click to collapse
Yep the genuine Samsung cable works when connecting the htc to the computer.
I've tried enabling USB debugging and switching between charging, MTP, PTP, RNDIS, Audio Source and Midi.. all of them come back with the windows popup

clownstyle said:
Yep the genuine Samsung cable works when connecting the htc to the computer.
I've tried enabling USB debugging and switching between charging, MTP, PTP, RNDIS, Audio Source and Midi.. all of them come back with the windows popup
Click to expand...
Click to collapse
Unfortunately it is starting to sound like the phone is at fault
Still under warranty? (KNOX 0x0)

*Detection* said:
Unfortunately it is starting to sound like the phone is at fault
Still under warranty? (KNOX 0x0)
Click to expand...
Click to collapse
Unfortunately not. Well it's been rooted and flashed so I guess not.
Ordered a wireless fast charger so hopefully that will see me through and WiFi network for file transfers.
I reckon the USB port will need replacing but I'm not really inclined to do that myself.

Just noticed you said you flashed back to stock using a backup you made
Have you tried stock using ODIN and 100% stock files, using CSC to reset?

My dad has a5 2016 with the same issue, and no warranty. I bought flex + connector , replaced it and still nothing. No fast charge ( it takes cca 4hrs to charge it fully ) and no usb connectivity. I gave up on that

@ClowsTyle
Any luck? I seen your recent post in another thread and it sounds like you tried to replace the USB but that didn't work.
I'm having the exact same issue now. Device suddenly stopped fast charging, Windows does not recognize it when plugged into PC. I ordered a new cable to double check and also tried on different computers. I also tried reinstalling drivers, but nothing has worked.

Hi my is doing the same thing no Fast charge and no pc connection, did anybody find out what happen with yours ?

You have to change power ic s535 for s7 edge.
When usb gets moisture power ic will damage.

I have same problem my phone charging 0-100 6hours but ı install notorious kernel and it takes 3 hours it is better than 6 hours

Same Issue
I've had the same issue for the past 3 weeks now and I've tried everything I know...
1. Tested cable and charger with another S7 and they work fine.
2. Factory Reset.
3. Changed the USB port chip.
4. Turned on "Low Battery Dump".
So far, the issue hasn't changed.

was this issue solved?
I´m having same issues whit my galaxy s7 active, I can not fast charge my phone no matter what cable I use, then noticed that evrytime I plug it to any computer it says the devicescan not be recognized, I´m about to buy a new charging port and install it, but I want to make shure this is not a software related issue.
I´ve tried several cables and several laptops/ pc´s
I´ve factory reseted my device and turned on low battery dump, wiped cache partition, and problem still there...

The charger could be faulty/damaged did you try a different charger?
---------- Post added at 06:43 PM ---------- Previous post was at 06:40 PM ----------
Dial *#08# and select the first option (mtp and another option i am on a custom rom that seems to not have the *#0808# setting

I also have the same issue with my phone the phone charges but not recognize and also tried to change settings on phone and nothing? And my other samsung phone works and nothing wrong with USB tried to install smansung drivers on PC and still same issue.
I tried a different USB and nothing works and different ports on my comp.
My ports works with my other samsung phone so not sure why not with the S7?
Is the USB faulty?