Develop Bugs

[Q] USB not recognised

Hi all,
I've read a lot of forums on what seems to be a pretty common issue, however, with each attempt at a fix the answer is still elusive.
the problem i'm experiencing is that when I connect my (unrooted) Galaxy S2 to my pc (running windows 7) the USB device is not recognised. The phone says that it is connected (USB Connect MTP-Connected), however, when I try to access my phone via Kies or explorer it is not there. I also get an error message saying that the 'device is not recognised'.
I've taken the following actions:
- Reinstalled a fresh version of Kies
- Reinstalled samsung drivers (once prompted by Kies)
- Tried at least 3 USB cables including the original Samsung cable
- As per one of the blogs i read, i switched to USB debugging on and then off as there was no effect
- I've tried turning on bluetooth, then connecting the USB device (also a 'fix' i've seen on another forum)
- I've restarted my phone a number of times
- Connected via different USB ports
- Restarted my PC
Could anyone please help me.
Thanks,
Rob

Get a new one
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

Uninstall all drivers, and Kies.
Restart the computer.
No go to device Manager under Human Interface Device/Universal Serial Bus controllers and see if there is that little yellow triangle there. If so click and uninstall any device with the aforementioned icon.
Now reset again.
Go to the Samsung website and download the drivers for the phone. Restart the computer yet again. Almost done.
Now attach your phone and it should be identified.
Go ahead and install Samsung Kies and you should be ok. I hope all this works.

I had a very similar issue with my last SII. One day it just simply would not be recognized by many computers using various USB cords including the OEM one. Windows always said something along the lines of " USB device not recognized, a device connected to this computer has malfunctioned." The computer would pick it up bit was listed as an unknown device in the device manager. Turns out it was a hardware failure so I had so get a warranty replacement
Sent from my Galaxy Nexus using Tapatalk 2

r0b0_0 said:
Hi all,
I've read a lot of forums on what seems to be a pretty common issue, however, with each attempt at a fix the answer is still elusive.
the problem i'm experiencing is that when I connect my (unrooted) Galaxy S2 to my pc (running windows 7) the USB device is not recognised. The phone says that it is connected (USB Connect MTP-Connected), however, when I try to access my phone via Kies or explorer it is not there. I also get an error message saying that the 'device is not recognised'.
I've taken the following actions:
- Reinstalled a fresh version of Kies
- Reinstalled samsung drivers (once prompted by Kies)
- Tried at least 3 USB cables including the original Samsung cable
- As per one of the blogs i read, i switched to USB debugging on and then off as there was no effect
- I've tried turning on bluetooth, then connecting the USB device (also a 'fix' i've seen on another forum)
- I've restarted my phone a number of times
- Connected via different USB ports
- Restarted my PC
Could anyone please help me.
Thanks,
Rob
Click to expand...
Click to collapse
That happened to me one day....
All I did was reboot my phone and tried a new cable and it worked
Sent from my SGH-T989 using xda premium

Not very helpful answers... you may have sorted this out already but...
One solution found on other threads that worked for me was this:
uninstall Kies
key in the dialer *#7284#
it has 4 option there..
UART (MODEM/PDA)
USB (MODEM/PDA)
Only change the USB setting.
Select PDA, if it already selected, select MODEM, don't hit "back", try reconnect, wait for windows to respond.
Unplug, then select PDA, try reconnect.

usb device not recognised
pardus said:
Not very helpful answers... you may have sorted this out already but...
One solution found on other threads that worked for me was this:
uninstall Kies
key in the dialer *#7284#
it has 4 option there..
UART (MODEM/PDA)
USB (MODEM/PDA)
Only change the USB setting.
Select PDA, if it already selected, select MODEM, don't hit "back", try reconnect, wait for windows to respond.
Unplug, then select PDA, try reconnect.
Click to expand...
Click to collapse
Dear all, I have same problem. I have official ICS 4.0.3 on mz Smasung S2 adn when I connect phone on mz computer i receiving information "USB Device not recognised" I tried all mentioned stuff:
reinstaling driver
cleaning micro stick on phone
hard reset
*#7284#
wipe clear data and cache
but i dont have connection Please help if someone have solution for this. Thanks in advance

srdjan_trisic said:
Dear all, I have same problem. I have official ICS 4.0.3 on mz Smasung S2 adn when I connect phone on mz computer i receiving information "USB Device not recognised" I tried all mentioned stuff:
reinstaling driver
cleaning micro stick on phone
hard reset
*#7284#
wipe clear data and cache
but i dont have connection Please help if someone have solution for this. Thanks in advance
Click to expand...
Click to collapse
Try changing your usb cable. If that still doesnt help, try it on another pc. If still not, then send it to samsung for repair.
Sent from my SGH-T989 using xda app-developers app

PC not recognizing Android USB connectio
romny19 said:
That happened to me one day....
All I did was reboot my phone and tried a new cable and it worked
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
Romny 19, you are dead on. I had thesame problem, read your posting and good to go.
Anyone trying this must remember to power down phone completely (Reboot),

[Q]USB not working on my GT-N7105

Hi all,
heres my first post on xda and I just wanna to explain my problem.
I am in possession of a GT-N7105, just bought the USB connection worked perfectly but when I tried to install the CF-ROOT and CWM RECOVERY me no more, the PC recognized the phone.
I state that I had installed windows 8.
First of all I installed Samsung KIES and did not recognize him. I uninstalled Kies and installed the drivers using the NOTE 2 TOOLKIT. Even so, nothing to do. The computer can not find the driver for QUALCOMM CDMA TECHNOLOGIES MSM.
I thought it was an error of Windows 8, maybe a bug, so I formatted the system by installing Windows 7 Professional, downloaded NOTE 2 TOOLKIT and installed the drivers without having the phone connected to the PC. When the TOOLKIT required me to connect to the pc NOTE2, I did. But even here, unfortunately, can not find drivers for QUALCOMM CDMA TECHNOLOGIES MSM.
P.S. The phone in DOWNLOAD MODE is recognized by ODIN and I got it back to the SERVICE FIRMWARE but even so the problem is not resolved.
I also tried to change the usb port but nothing.
I tried to install other versions of firmware via odin but nothing. I do not know what to do. Google can not give me a solution and not XDA.
So I decided to write here publicly to expose my problem. I hope someone of you can help me solve this problem that prevents me from installing the CM10.1!
In advance thank you all.

Delete this.
Sent from my GT-N7100 using xda premium

UtkarshGupta said:
Delete this.
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
Thanks man! Very helpful!

nerdcorner69 said:
Thanks man! Very helpful!
Click to expand...
Click to collapse
Welcome.
But I can't figure out how that helped you...
Sent from my GT-N7100 using xda premium

Xda community is very helpful! Thanks all!

Found it!
My friend had a similar problem, he could not connect his note to the PC.
The following fixed the issue.
1. install new samsung kies.
2. follow these steps:
From -
http://www.danrichard.com/2013/06/1...nect-to-pc-via-usb-with-unknown-device-error/
"Method 3 – Ensure you have the right settings
By default my phone was already set to the right settings for USB file transfers so I’ll assume most of these ship with the same configuration, hence why I have this as method 2. I found this on a forum and while it did not work for me, it seems a few other folks declared it a success.
Launch the phone key pad on your note and press *#7284# (don’t forget to start with that * symbol!)
When you press the last pound sign (#) this will bring up an option that will allow you to change your USB connection settings (modem or PDA) – change it to PDA.
At the bottom there is a button that says Qualcomm USB. Click on it.
In that menu click on MTP + ADB option.
Save and reset.
Wait for your phone to restart.
Plug the micro USB cable to the Note 2 and the the other end to your PC or Mac
Let your computer down load and install drivers.
Once installing is done, unplug then replug phone.
There should be a USB symbol on your phone in the status bar - click on it. It should ask if you wsnd to use mtp or ptp. Click MTP
At this point your PC should open the phone’s folders in explorer similar to the screenshot above. "
Hope it helps you. keep the faith!
:highfive:

Really thanks man! Finally my usb is working like the first time Thx!

droritos said:
"Method 3 – Ensure you have the right settings
By default my phone was already set to the right settings for USB file transfers so I’ll assume most of these ship with the same configuration, hence why I have this as method 2. I found this on a forum and while it did not work for me, it seems a few other folks declared it a success.
Launch the phone key pad on your note and press *#7284# (don’t forget to start with that * symbol!)
When you press the last pound sign (#) this will bring up an option that will allow you to change your USB connection settings (modem or PDA) – change it to PDA.
At the bottom there is a button that says Qualcomm USB. Click on it.
In that menu click on MTP + ADB option.
Save and reset.
Wait for your phone to restart.
Plug the micro USB cable to the Note 2 and the the other end to your PC or Mac
Let your computer down load and install drivers.
Once installing is done, unplug then replug phone.
There should be a USB symbol on your phone in the status bar - click on it. It should ask if you wsnd to use mtp or ptp. Click MTP
At this point your PC should open the phone’s folders in explorer similar to the screenshot above. "
Hope it helps you. keep the faith!
:highfive:
Click to expand...
Click to collapse
Downloaded the Samsung Mobile Drivers and used Method 3- WORKED FINALLY!

Holy Toledo, you are confused my friend, if your OP is any indication. Understand that XDA is not a noobs forum. Yes, everyone had to start at the beginning, but if a forum wishes to aim for a clientele with a bit higher level of knowledge/experience, there's nothing wrong with that and they have a right to do so, especially with there being a gazillion other Android forums that do handle noob questions. I suspect you don't realize how many things are wrong with your OP, "wrong" in the sense that they reveal a massive level of confusion on several quite basic concepts. To wit: reinstalling the PC's entire operating system as part of a solution toward hooking up your mobile to it is such ludicrous overkill that it is not a wonder people will read it and run in the other direction. Fast . And that's one example of many I could make. None of this makes you a bad person by the way, just a very inexperienced one. The best advice I can give you is to pay your dues a little longer and post to other forums if you must, and use XDA in the meantime as the best reference you can find anywhere on the net. I don't know if you'll ever get this, but down the road others in your shoes will. And I won't be revisiting this thread, so good luck :good:.

Note 2 recogniez in odin mode but not in normal

Hi!,
My note 2 is not recognized by windows, i connect it to the computer and it shows that is charging, but my computer doesn't even make a sound of a usb device getting connected.
But when i put the phone on odin mode, my pc recognize it normally, I could even install stock rom on it, but even with stock is not getting recognized.!!
Any suggestions!¡?
Thanks

What I've found with my GT-N7100 while trying to repair the IMEI is that if you dial *#7284# from the phone app, it takes you a "PhoneUtil" menu. If USB is set to "MODEM", Windows will not recognise the device, but if set to "PDA", it's fine.
As stock, mine was set to PDA and I believe this is what it should be.. but it might be worth checking that to see if it is set incorrectly.

darkriff said:
Hi!,
My note 2 is not recognized by windows, i connect it to the computer and it shows that is charging, but my computer doesn't even make a sound of a usb device getting connected.
But when i put the phone on odin mode, my pc recognize it normally, I could even install stock rom on it, but even with stock is not getting recognized.!!
Any suggestions!¡?
Thanks
Click to expand...
Click to collapse
well it may be the case where your usb port is malfunctioning as I too faced the issue and later found out the there was a problem with the port though it charged hopefully u have the latest drivers installled

shhbz said:
well it may be the case where your usb port is malfunctioning as I too faced the issue and later found out the there was a problem with the port though it charged hopefully u have the latest drivers installled
Click to expand...
Click to collapse
same problem in my n7100 also, do you means microUSB socket of N7100 was dead.

wangap said:
same problem in my n7100 also, do you means microUSB socket of N7100 was dead.
Click to expand...
Click to collapse
Weird thing is that yesterday trying *#7284# and putting the phone into modem/pda mode, the computer recognizes it as unknown device, and i dont think is the port because in odin mode my pc recognize it normally...

wangap said:
same problem in my n7100 also, do you means microUSB socket of N7100 was dead.
Click to expand...
Click to collapse
it was not completely dead as it was charging fine but it always failed to recognise in pc and driver installation failed so service center guy chk the usb socket on phn fixed it with new one and bam it detected in my laptop fine
darkriff said:
Weird thing is that yesterday trying *#7284# and putting the phone into modem/pda mode, the computer recognizes it as unknown device, and i dont think is the port because in odin mode my pc recognize it normally...
Click to expand...
Click to collapse
in my case the code help me to detect my phone in pc but still failed to proceed with driver installation and in the end again start charging the phone

shhbz said:
it was not completely dead as it was charging fine but it always failed to recognise in pc and driver installation failed so service center guy chk the usb socket on phn fixed it with new one and bam it detected in my laptop fine
in my case the code help me to detect my phone in pc but still failed to proceed with driver installation and in the end again start charging the phone
Click to expand...
Click to collapse
So, Do I have to change the microusb port?

darkriff said:
So, Do I have to change the microusb port?
Click to expand...
Click to collapse
Will this one fits?
http://www.ebay.com/itm/New-Connect...e_Replacement_Parts_Tools&hash=item4d0ac57451
Click to expand...
Click to collapse

darkriff said:
Will this one fits?
Click to expand...
Click to collapse
well it will work perfectly , but my suggestion would be to take it to authorized service center and get it done by them if not just be careful while opening the front panel of the phone as the silver panel get scratches easily and yes be careful to the network reception wire that is attached to it as it requires gentle handling when removing it out of the old one. maybe this video may help you http://www.youtube.com/watch?v=FfvOTFssDMM
Good Luck

darkriff said:
Will this one fits?
Click to expand...
Click to collapse
My Note 2 was repaired by replace the port board now.

ok, i replaced the usb port board, still same Issue :S

Samsung galaxy s4 mini duos gt i9192 does not appear in my computer

I have a problem with my s4 mini duos ..it doesn't appear in my computer.. And when I connect any other mobile it is o.k but my phone no..if i connect another s4 mini dous it appears. But my s4 mini duos not appear!"""

salim2000 said:
I have a problem with my s4 mini duos ..it doesn't appear in my computer.. And when I connect any other mobile it is o.k but my phone no..if i connect another s4 mini dous it appears. But my s4 mini duos not appear!"""
Click to expand...
Click to collapse
1. Change the USB cable.
2. Try connecting on another USB port on your PC.
3. What is the ROM version (hope both s4 minis were having same ROMs, when u tried). What is the version of Kies installed? Or you have Kies installed at all?
4. When you connect the phone, does your OS (if it's Windows) give a sound indication.
5. Be specific, is there no indication or does it show in your device manager as a "?"

Could he anything from a bad flash, bad cable, bad computer or bad port

dalbirxda said:
1. Change the USB cable.
2. Try connecting on another USB port on your PC.
3. What is the ROM version (hope both s4 minis were having same ROMs, when u tried). What is the version of Kies installed? Or you have Kies installed at all?
4. When you connect the phone, does your OS (if it's Windows) give a sound indication.
5. Be specific, is there no indication or does it show in your device manager as a "?"
Click to expand...
Click to collapse
I use the same cable and the same pc for rom installing(it is work normally), but it doesn't apear in my computer.

I had dame problem with my S3 which I bought from ebay. It turned out it was an imported assembled phone, without Samsung official warranty. I had to return the phone as the build was showing as modified and boot image was unofficial.

salim2000 said:
I have a problem with my s4 mini duos ..it doesn't appear in my computer.. And when I connect any other mobile it is o.k but my phone no..if i connect another s4 mini dous it appears. But my s4 mini duos not appear!"""
Click to expand...
Click to collapse
Maybe just install Samsung Kies, this will install also USB drivers.

FearFac said:
Maybe just install Samsung Kies, this will install also USB drivers.
Click to expand...
Click to collapse
Or he can install drivers only from here

SilviuMik said:
Or he can install drivers only from here
Click to expand...
Click to collapse
It was work properly.. but after installing many custom roms and official roms the device did not regognized on my pc..But i can flash it with any firmware through odin..

You can use Odin to flash firmwares, Odin works fine.
But your storage (both sdcard) don't appear on the computer.
Is this right?

fburgos said:
You can use Odin to flash firmwares, Odin works fine.
But your storage (both sdcard) don't appear on the computer.
Is this right?
Click to expand...
Click to collapse
yes, that is right

There might be two kinds of common to samsung phones issues
1 - phone connected not through genius cable - use one that came in box with device
2 - phone is not in mtp mode - in this case dial in STOCK dialer *#0808# , in appeared box select mtp+adb or if not works ptp+adb
There is also some rare occasions of not detecting device on WindowsXP but usually it is not the case

Allwinda94 said:
There might be two kinds of common to samsung phones issues
1 - phone connected not through genius cable - use one that came in box with device
2 - phone is not in mtp mode - in this case dial in STOCK dialer *#0808# , in appeared box select mtp+adb or if not works ptp+adb
There is also some rare occasions of not detecting device on WindowsXP but usually it is not the case
Click to expand...
Click to collapse
1-I connected it through genius cable - I used one that came in box with device..that is work with other devices properly.. but not solve the issue
2-I tried i ,but also it didn't solve the issue

Have you tried on different computer?
Are you using screen lock, pin, pattern etc? In mine if screen is locked in the computer device appears empty, no internal storage or sdcard

fburgos said:
Have you tried on different computer?
Are you using screen lock, pin, pattern etc? In mine if screen is locked in the computer device appears empty, no internal storage or sdcard
Click to expand...
Click to collapse
yes i tried on different computer،i don't use lock,pin,pattern,etc
not solve the issue

Thank You
Allwinda94 said:
There might be two kinds of common to samsung phones issues
1 - phone connected not through genius cable - use one that came in box with device
2 - phone is not in mtp mode - in this case dial in STOCK dialer *#0808# , in appeared box select mtp+adb or if not works ptp+adb
There is also some rare occasions of not detecting device on WindowsXP but usually it is not the case
Click to expand...
Click to collapse
Thank You

I know its an old topic, but might be useful to someone.
I had the same issue with my i9192. Restarts did not help. But battery removal did.

Note 2 {N7100} not connecting as a media device

Hello,
I have a problem with my Note 2 (N7100).
When I connect my Note 2 (N7100) to my Laptop, its not connected as a media device, it takes charge only. I can't see the internal storage or memory card as a external device, also not connected in download mode in odin.
Please anyone help me solve the issue.
Thanks in Advance.
Regards.

sadique2804 said:
Hello,
I have a problem with my Note 2 (N7100).
When I connect my Note 2 (N7100) to my Laptop, its not connected as a media device, it takes charge only. I can't see the internal storage or memory card as a external device, also not connected in download mode in odin.
Please anyone help me solve the issue.
Thanks in Advance.
Regards.
Click to expand...
Click to collapse
Are you using a custom ROM....
Anyway after connecting your phone you should see a notification on the bar that says USB for charging, click on that and tap on the second option, USB for media transfer

Anymore suggestion
Vishal Vignesh said:
Are you using a custom ROM....
Anyway after connecting your phone you should see a notification on the bar that says USB for charging, click on that and tap on the second option, USB for media transfer
Click to expand...
Click to collapse
Thanks anyway
but nothing shows as a notification in status bar or anywhere else.
And in both roms Stock or custom, problem is same, otherewise I am using custom rom (Eclipse by AC).

sadique2804 said:
Thanks anyway
but nothing shows as a notification in status bar or anywhere else.
And in both roms Stock or custom, problem is same, otherewise I am using custom rom (Eclipse by AC).
Click to expand...
Click to collapse
OK, go to developer options, there will be an option called, select USB configuration....
Connect your phone to your PC and click the option and select media device

Vishal Vignesh said:
OK, go to developer options, there will be an option called, select USB configuration....
Connect your phone to your PC and click the option and select media device
Click to expand...
Click to collapse
Not found USB configuration
USB Debugging is checked

Does your computer detect your phone on USB debugging

Vishal Vignesh said:
Does your computer detect your phone on USB debugging
Click to expand...
Click to collapse
No
Not Detecting a phone nor a beep.
Even Samsung USB driver is installed.

sadique2804 said:
No
Not Detecting a phone nor a beep.
Even Samsung USB driver is installed.
Click to expand...
Click to collapse
Try using another USB cable on another port on your computer....
Type the problem in the forum of your rom...
They can help you better.....

Thanks buddy
Vishal Vignesh said:
Try using another USB cable on another port on your computer....
Type the problem in the forum of your rom...
They can help you better.....
Click to expand...
Click to collapse
3 Different types of cables in 3 different ports including USB 3.0 port
and also tried in another laptop.
same cables and laptops works perfect for other android phones.
btw its not the rom issue
service menu configuration in phone
maybe its qualcomm usb configuration