I'm having an issue where my thunderbolt is not recognized by my PC any longer. I used to have it set up with pdanet and everything worked well for about a week. All of a sudden, any computer i tried to plug the device into, wouldn't detect the phone. A friend of mine has tried his thunderbolt on my computer and it detects it.
When plugging my phone in, it pops up an error message with "USB Device not Recognized." In the device manager, the phone shows up as Unknown Device. I have tried this on 3 different pc's, using 3 different data cables. No USB symbol displays on the taskbar of the phone when I plug it in, however, it does charge.
What I have tried:
Changing data cables.
Using another PC.
Uninstalling device drivers and letting windows re-detect and install.
Downloaded HTC Sync and ran it after uninstalling drivers again and re-plugging the phone.
Changed different Connection settings on the phone, such as USB Debuggin on/off, and changing it to HTC Sync Mode, Charge Only, Disk Drive, etc
Mounted and unmounted SD Card in the phone settings.
OS: Windows 7 x64
Is there anyone out there that can help?
Thank you for any information you may provide.
I remember that one of my friend's desire cannot be detected by the pc before, he search the forum and find out that he need to change something in the driver files before installing the driver. I'm not sure if that will work in your case thought..
Hello.
Short story: my phone was a little wet and i have some issues with it, mostly i want to get a mass storage to get working. (cant root)
Basically at first the phone didn't even want to charge, when i connected it to the PC windows was giving me an error that the device cannot be recognized, and couldn't install the drivers. (i had Kies installed)
I dried it completely, now the phone turns on without any problem, when i connect it to the pc the phone is recognizing connection (i hear sound + the button backlights are firing up for a sec)
Homever, windows is not detecting any USB device at all, and in about phone/info it says the phone is connected to the AC instead of USB.
When i connect it with USB there is no dropdown in notification to choose from charging, storage etc.
There is also manual usb storage mounting under settings/communication/usb settings , when i'm trying to mount here it just says to connect the phone with usb cable (not detecting connection, homever the backlight + sound is here after connecting, and it's charging)
I tried connecting it with usb debugging on/off even tried to fiddle with in service menu (*#7284#) but nothing.
And since i cannot get the usb storage working basically i cannot flash anything or root it.
Also the USB cable is not a Samsung but an HTC one, could this be a problem? (people in different thread said those cables are the same so it shouldnt be a problem, same amperage, same stick etc.)
Even tried to install MountUSB Widget from market, but it doesn't work when im trying to start the app it's force closing, when i make widget on desktop and press it the phone just vibrate for 1 sec and nothing happens.
When i connect phone with Kies AIR and it works, i mean it shows the storage information, also recognize the phone model correctly, how much free space i have on internal and on SD card but i cannot click "show in explorer" it's greyed out.
Any experts out there could help me? :crying:
Just a blind guess, try a USB cable which supports your device. If it doesn't help, I'm afraid it's a hardware problem and you will have to consult some hardware expert.
Hi,
I would like to see if I can get anyones assistance with solving my problem. I have lost the ability to connect my Nexus 5 to my computer via USB. I had previously been able to connect the phone without any problems.
Connecting my phone to PC charges the phone but no drivers are loaded, nothing changes in device manager and I cannot see a change in windows explorer to view the memory card.
So far I have tried the following:
searches on various sites
rebooting phone, starting in safe mode, wiping all data, performing a hard reset
connecting other phones to usb cable to check that it is not a charge only cable, also trying several other USB cables
connecting phone to other computers
connecting other phones (HTC) to load drivers (then uninstalling drivers)
displaying all hidden devices in device manager and removing all drivers that resemble something to do with mobile phones
uninstalling programs I no longer require on the PC
using "wugs nexus root toolkit" to uninstall and re-install drivers
checking & unchecking MTP, PTP, developer options, USB debugging in various combinations to elicit a response from the computer.
I have also tried to visually check the connections of the USB port on the phone wondering is there is a break but I cannot see very well.
does anyone have any further suggestions to get this phone connected to a PC?
my only last thought is to attempt to open the phone and check the resistance of the plug connections.
Have you tried enabling and disabling usb debugging while plugged in?
Sent from my Nexus 5 using Tapatalk
I just did it, no change in Device manager or explorer
tropicalchills said:
I just did it, no change in Device manager or explorer
Click to expand...
Click to collapse
Are you sure you're using a data usb cable and the usb port is good?
Same Issue
same thing happened to me today when i connected the device to PC.
Mine says unknown device on PC under other devices. so i hope my USB port is ok.but im not using the original SUB cable. i wonder that's is the issue. but it didn't bother me until today. my original cable is at my friend's house.
Tried updating drivers manually. But following error message occurs once i select the drivers folder and hit ok.
Windows was unable to install your unknown device
Please help.
so, not really a solution but while at work my phone fell on to a nice rock cracking the screen. I have replaced the phone and the new phone connects to the pc fine, drivers come up without a problem (I will put this down to a fault with the phone)
Thank you for your assistance
After hours of troubleshooting, uninstalling/reinstalling USB drivers and Samsung Mobile USB Drivers, modifying Windows' registry, etc. I've come to the conclusion that the problem might be the USB cable that came with my Galaxy S6. But there's a catch...
When I plug my S6 into my Win7 desktop (back USB port, regardless of 2.0 or 3.0) using the cable that came with it, a fresh device installation results in the phone registering properly, then reverting to "Unknown Device" just seconds later. If I plug it in again any time after that, it will say "USB Device Not Recognized" and register as an "Unknown Device" in Device Manager - all it will do is charge.
BUT, plugging my S6 into the same USB port in my desktop using both a cable that came with the S3 and another that came with the S7, they both result in a properly registered device in Device Manager which allows both data transfer and charging.
Riddle me this: The catch is, when I plug my S6 into my Win8.1 laptop using the original cable, it registers properly and allows data transfer and charging.
Is there an explanation for this? The fact that the original cable doesn't work with my desktop but works with my laptop sounds like a driver issue - though using different cables in the same desktop port working properly makes it sound like a cable issue...
Brand New Unlocked S8+... Tried to connect it to my PC to use a previous copy of smart switch backup but it never connects.. Windows Explorer never displays a mounted drive either. Smart Switch Eventually comes back with Failed to connect to the device.
The Phone displays the "Attention The connected device is unable to access data pm this device. Reconnect the USB cable and try again...."
Phone is on Transfer Media files (MTP)
USB Debugging is one.
Device Manager says "Samsung Android Phone - SAMSUNG Android ADB Interface" two times - No red or yellow exclamations.
I've removed the software in device manager and restarted both the phone and the laptop multiple times.
I updated Smart Switch and did More\Reinstall Device Driver.
Does anyone else have any workarounds for this? I found one article (https://www.recovery-android.com/connect-samsung-to-computer.html) but still no success.
I actually have the exact same issue on windows 10. Anyone figured out a solution?
Doesn't seem like there is much help here on the 2 Samsung formums I posted on....
I know its not my windows profile as I have tried 3 different profiles as well as safe mode.
Tried 2 different sets of Samsung USB drivers and no improvement.
Like I said I had no issues on a windows XP machine or a windows 10. I didn't even need to install the USB drivers/Smartswitch on either of those machines.
We can't be the only 2 people!
Kalveitt said:
I actually have the exact same issue on windows 10. Anyone figured out a solution?
Click to expand...
Click to collapse
Firstly, i cannot give you direct answers.
Just my thoughts.
i have a S8+. No root stock as is.
I have Lenovo laptop Win 10.
From day one, out of box, i connected
S8+ and it connected. I can do whatever
i want. Transfer data, photos videos.
ADB etc
So it should work...?
However i do realize there are quite a few things to consider......
Samsung drivers on laptop and a few other
issues..... eg
For one,
have you enabled
in Phone /Settings /Developers Option /Usb debugging.?
Normally first time when you connect
With pc /laptop you should get
a small pop-up message(on device) to allow
phone to connect.?
(that's my experience, over years)
Good luck
Yes, USB Debugging is on and connection is set to MTP.
Windows recognizes "USB Android" but dosnt install the driver successfully.
It will appear as a modem in Device manager but nothing is mountable.
I have 2 desktop pcs with win 10. One with samsung software Kies 3 and smart switch installed and the other no samsung software. Both find the device Galaxy S8+, in device manager under universal serial device controllers i have Samsung Mobile USB Composite Device. You have an adb driver I think because you have usb debugging on, i would turn usb debugging off. The pc should find a device connected to the usb and download a driver, once done the device is recognised as galaxy S8+ in my case but will not communicate with the pc until the phone has given permission. On the phone will be a message asking you to allow the connection. Hope this helps ??
psuhbggrad said:
Yes, USB Debugging is on and connection is set to MTP.
Windows recognizes "USB Android" but dosnt install the driver successfully.
It will appear as a modem in Device manager but nothing is mountable.
Click to expand...
Click to collapse
Firstly i do understand that you
must be quite annoyed trying to figure
out issues. (I would) Thankfully i don't.
Bottom line is that it should work..!
My experience confirms, that S8+/laptop Win 10 works.... 100%when connected
However a few suggestions.
If you feel you checked all checkbox.?
However you never said anything
about popup notice ? granting premission
for device to connect.?
So device /laptop /pc is not "seeing" each other?
All Samsung devices I have used, first time connection gives me this popup a notice
Can't remember exact wording.
Something... eg
Device id 5786446.......
Have or does your other Samsung devices
connect etc.?
Have you tried connecting to a friend pc laptop.
An option is to go to a Samsung Care Center
and as them to test and connect.
My experience (in past) is that they should
assist you.
If it connects to friend pc or Service provider /Samsung Care Centre.
Then surely it has to be your pc/laptop?
So I turned off usb debugging and revoked the permissions on the phone, connected it to my PC.
Samsung Android (with a Yellow Exclamation) was already present in Device Manager under "other devices" so I uninstalled that.... and rescanned. My laptop attempted to reinstall but it generated a Driver Installation Failed message on "SAMSUNG_Android" - no driver found.
Device Manager once again shows the Yellow Exclamation Point
I would go on to Samsung support look up the phone and download the usb driver and install from the download. Good luck
I've downloaded the drivers from Samsung 2x.
psuhbggrad said:
So I turned off usb debugging and revoked the permissions on the phone, connected it to my PC.
Samsung Android (with a Yellow Exclamation) was already present in Device Manager under "other devices" so I uninstalled that.... and rescanned. My laptop attempted to reinstall but it generated a Driver Installation Failed message on "SAMSUNG_Android" - no driver found.
Device Manager once again shows the Yellow Exclamation Point
Click to expand...
Click to collapse
I can vaguely remember that i had this same
issues with my Note 5 and Win 10.
This was many months/year or two, ago.
I also had yellow exclamation etc.
Further in Device manager( laptop) kept installing wrong Samsung drivers.!
I uninstalled drivers/installed and battle for a few months like this Then one day Windows
did an update and in update i noticed
Samsung drivers included etc. (must have been correct)
Ever since that update i had no issues again.
Bottom line... some drivers issue?
Not S8 +?
Good luck
psuhbggrad said:
Brand New Unlocked S8+... Tried to connect it to my PC to use a previous copy of smart switch backup but it never connects.. Windows Explorer never displays a mounted drive either. Smart Switch Eventually comes back with Failed to connect to the device.
The Phone displays the "Attention The connected device is unable to access data pm this device. Reconnect the USB cable and try again...."
Phone is on Transfer Media files (MTP)
USB Debugging is one.
Device Manager says "Samsung Android Phone - SAMSUNG Android ADB Interface" two times - No red or yellow exclamations.
I've removed the software in device manager and restarted both the phone and the laptop multiple times.
I updated Smart Switch and did More\Reinstall Device Driver.
Does anyone else have any workarounds for this? I found one article (https://www.recovery-android.com/connect-samsung-to-computer.html) but still no success.
Click to expand...
Click to collapse
In the past I had this problem I downloaded USBDeview to my PC and deleted all of the old Samsung drivers, after rebooting the PC the phone was able to connect with the PC.
Tried USBDeview and removing the Samsung drivers but no difference
Still unable to connect.
I'm having this problem as well. I'm still trying to work it out, but when I remove and re-add the device through Device Manager I get this error: "An existing device was found that is a duplicate of the device being manually installed" and the device DOES connect as a camera, just not for full file transfer.
I had the same problem and tried many of the fixes, including different USB cables and different computers and different phones. I finally figured out that the case I had on the S8+ was the problem (at least for me). I took it off and everything works.
Hi, i have a pc with windows 10 . In device manager under universal serial device controllers i have Samsung Mobile USB Composite Device. i think you should meet best mobile shop.
jimmygarison said:
Hi, i have a pc with windows 10 . In device manager under universal serial device controllers i have Samsung Mobile USB Composite Device. i think you should meet best mobile shop.
Click to expand...
Click to collapse
I have Windows on Lenovo Laptop with latest Windows updates installed. Yesterday, I downloaded Samsung Smart Switch unlocked the phone and connected it to the laptop. Smart Switch found it immediately and I did a backup. I did not need to check Device Manager. It must be a drivers problem as mentioned above.
Note 8, getting "Attention The connected device is unable to access data pm this device."
And I am only able to see some files, Sammy is a crazy fool, this is basic stuff
installed the windows fall update a week ago now connect my phone to my laptop and nothing is recognised, no phone memory and no memory card just a empty space when i click the icon where my phone should be, i've had samsung drivers installed and they have worked fine so far till today, any ideas where to find the latest drivers? and what else i can do to get access to my phone on my laptop?
solution that worked for me
On my windows 10 PC, I opened device manager (open up start and just type 'device manager') and under portable devices there was a usb device called MTP USB device or something like that (I forget the exact name) with a small triange and an exclamation mark next to it. I clicked on that and then clicked "update drivers." When the prompt comes up I chose the automatically look for drivers option. This fixed the issue and now my Galaxy s8 is recognized (it no longer says MTP USB device or whatever it was). Hopefully this works for others as well. You can also probably download the usb drivers for the phone from samsung.