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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?

Can't connect to pc-USB not recognized, unknown device

I have been searching for about a week now and still can't figure this problem out. I bought this phone used about a month ago and I haven't tried to connect it to my pc until just recently. I am wanting to root and unlock my phone but I can't connect to pc using usb cord although it will charge it.
I am on GB 2.3.6 vuvkj6, stock.
I have tried 4 different usb cords, 4 different pc/laptops and all usb ports. I have also installed and uninstalled several usb drivers with no luck.
My phone can only get into download mode using a jig. Even in download mode, I can't connect to pc. I have tried using Heimdall, Odin, and kies but it just does not connect.
If I can use a jig to get it into dl mode, does that mean the phones usb port is fine?
I just want to be able to connect with pc. Is it possible to flash using my sdcard? I am thinking maybe the phone is missing something to pick up the usb signal or something.
I am lost, any help would be appreciated.

Maybe, I think it's a phone issue.
Do you still have a warranty?

I bought this phone used, so no warranty. If the jig works, does that mean the usb port is ok?

Does the phone charge when plugged in? Have you tried to go ahead and flash even though it says not recognized?

ligitalipeople
Yes the phone does charge when plugged in. I can't flash using Heimdall or Odin. Any other way of flashing?
I have also put the phone into debug mode with no luck.

Have you done a factory reset?

Yes, I have done a factory reset.

FINALLY! I got it to work.

Can you post back here and tell us what you did to get it working in case someone else has the issue?
Thanks and glad you got it going!

I am not sure what made it work for me. But what I did was "clear memory" on ram. I don't remember how I got onto that screen but I clicked on ram and clear memory.
I then pushed the usb into the pc a few times really fast until pc showed somethnig other than "usb device not recognized". Pc then started to show device connected.

if you are using windows i have found that sometimes the usb ports u used for the phone get stuck to the driver that was there in the first place. So what I do to fix this is go into device manager from the control panel and then uninstall the drivers for the specific port that I am trying to use. While keeping my phone unplugged from the computer I then reinstall the samsung drivers, restart my computer and then try to plug my phone in. 90% of the time that has been what works for me.

Ok, I figured out the problem. It has nothing to do with the drivers or clearing ram memory. My problem is the actual micro usb connection. If is a little loose from side to side and when I push it to one side, it connects no problem.

That is the exact same thing that happened to my wife's phone... luckily it was still under warranty...
Sent from my SGH-T959V using Tapatalk

My phone is out of warranty. At least now I know the problem. It was extremely frustrating trying to figure it out.

[Q] Cannot get pc to recognize skyrocket

So my girlfriends little brother gave me his skyrocket. He asked me to backup his pics, which I did with no problem. I then did a factory reset. After that, my computer does not recognize the phone! I've tried different cables, different computers. My girlfriend has the exact same phone, connects right away.
I even flashed it with a different rom and put ICS on it. No luck! I then proceeded to take it to a phone repair place, thinking it might be the actual usb port. They said they checked out the port, and it look fine. All solder joints were good, no bent pins.
The weird thing is, is that it connects on an average of 1/20 times! It charges perfectly too. The phone doesn't go in and out of charge mode if i wiggle the cable either. I'm kind of confused! Is there a file on the phone that tells the computer what it is when connected? If so, can I manually replace that file? WHAT DO I DO!

When you goto recovery mode can you goto mounts and say mount usb? and does the pc recognize it then?
Sent from my SAMSUNG-SGH-I727 using xda premium

Kind of. We had trouble with it when flashing it. I personally didn't flash it. I watched my friend do it
Sent from my SAMSUNG-SGH-I727 using XDA

You could try installing the drivers again..

You mean on the computer? I did that. No luck. It does connect more often though WITH the drivers.

I had some problems with USB connectivity too. Using the cable that the Skyrocket came with solved my issues.
Have you tried any combination of restarting and reinstalling the drivers?
Swyped from my Nook Tablet, running CM7.

Yes. I've tried multiple cables including the stock cable. Installing drivers, restarting both devices. I have definitely ruled out the cable, the PC ( PC's actually), and the physical USB port.
Sent from my SAMSUNG-SGH-I727 using XDA

I had similar issues, messed with phone for a bit and came up with this
System settings>more>USB utilites
Now I got a screen that says USB mass storage with a button that says Connect storage to PC. Tap Button.
A window will pop up asking to Turn off USB debugging (if on) Tap OK
Connect USB cable to storage (plug USB cord into PC).
You should now be at the USB Mass Storage screen, Tap button at bottom (Turn on USB storage)
I found this to be the way to turn on Mass Storage since I flashed ICS, I believe. Hope this helps you, it took me a little while to figure out.

ChillFactorz said:
I had similar issues, messed with phone for a bit and came up with this
System settings>more>USB utilites
Now I got a screen that says USB mass storage with a button that says Connect storage to PC. Tap Button.
A window will pop up asking to Turn off USB debugging (if on) Tap OK
Connect USB cable to storage (plug USB cord into PC).
You should now be at the USB Mass Storage screen, Tap button at bottom (Turn on USB storage)
I found this to be the way to turn on Mass Storage since I flashed ICS, I believe. Hope this helps you, it took me a little while to figure out.
Click to expand...
Click to collapse
Of course, that's how it's always been except in a slightly different location on ICS

I've tried that also. Didn't work
Sent from my SAMSUNG-SGH-I727 using XDA

it basically sounds like the USB port on the phone is dead. Warranty that sucker

I took it to a repair shop. They said the port was perfectly fine!
Sent from my SAMSUNG-SGH-I727 using XDA

Not to mention that it was working perfectly before I did the factory restore
Sent from my SAMSUNG-SGH-I727 using XDA

how exactly did the repair shop test it?

try plugging it into another usb port on the same computer or try using a different computer. It could be the usb port on the PC itself.

gokartracer5 said:
try plugging it into another usb port on the same computer or try using a different computer. It could be the usb port on the PC itself.
Click to expand...
Click to collapse
That's the first thing he tried, it's in the OP

yeah i've tried everything! The repair shop determined that the port was good by examining it under a scope and they also said they tried re-flowing the solder joints. They said they wanted to stay away from replacing the usb port because it was very difficult to replace, not to mention they didn't warranty the job!

Someone has to know the answer to this!
Sent from my SAMSUNG-SGH-I727 using XDA

if its still under warranty replace it, thats all u can do. No one else in this forum besides u can physically touch the phone, so if you've tried all suggestions thats all thats left

i have the same problem but mine is little different, when i power off the phone it keeps on going to download mode, i keep on restarting it and it goes back to download mode, i flash stock rom and it does the same, i flash ics rom and it keeps on doing the same can anyone help?

Phone not being seen by any PC

So this issue started a few days ago. Any time I plugged my phone in it would constantly connect and disconnect from the pc. I've tried multiple usb cables, ports, and the 3 PCs I have with the same result on each. Now when I plug it in, it is no longer being recognized by the PC, Odin, ADB, etc... It will charge but that is it.
I have a warranty replacement coming to me however I need to be able to get this one back to stock... Any suggestions?
Before anyone asks, NO it has never been wet, dropped, damaged in any way, set on fire, caught in a land slide, earthquake, what have you.. The phone itself functions perfectly fine. All drivers are up to date, none of my PCs configurations have changed. I have one I use specifically for app development and not even that one will see the phone.

I had the same problem. I used a different cable and it all worked better....now with that said it happened again so I flashed my phone back to stock and all was well.
Then went to flashing ROMS.
Sent from my SAMSUNG-SGH-I727 using xda premium

Really check out the micro usb cable. A bad cable will just about always allow a device to charge, but data transfer is another story. If you really have tried a few micro USB cables, then it the problem relies elsewhere. Try restarting both phone and PC, and if neither works, sounds like you have a busted port on the Skyrocket.

Thank you both for your responses. I am a PC technician so I followed my usual troubleshooting steps to figure this out. I narrowed it down to either all of my cables are bad (not a chance) or the phone is just f**ked (likely). Ah well ill have to try to use another way to force the stock firmware and recovery on here. Lol
HTC = Hate The Consumer

I use my old Nokia OEM USB cable. Connects with the right number of pins on the USB connection end. I'd check your USB cables for # of pins . Skyrocket uses 5 I believe. Also that there is sufficient power to your USB ports. Aka avoid front USB ports which could only be 4 pin....
Sent from my I727 rocket on Marz! @[email protected]

When you plug the usb cable in, do you see the usb icon at the top left of your screen? I have to pull that window down to tell it to connect to pc, then confirm it again before mine connects. Mine doesn't auto connect on its own.
I see you've been a member for a few years so if its not connecting, that really sucks man. Hope you get it figured out.
Sent from my SAMSUNG-SGH-I727 using xda premium

Your phone is a ghost.
Sent from my HTC One X

Not running the AOKP ROM are you? The R3 build had an issue with this, and all AOKP will disable USB to PC if you enable 'fast charge' under ROM Control...
Good luck :S

According to what I've been reading you can try using the *#7284# code and setting the USB portion from PDA to MODEM and then back to PDA and it would kickstart the connection. No dice for me though. Ive been through 7 different USB cables already.. I am not about to go and buy one just to keep playing with it my other phones connect just fine using the same cables. No, I am running the latest Sky ICS

Phone Won't Recognize Computer

Or my computer won't recognize my phone... not sure which.
Anyway, when I plug the phone into my computer it still charges, but I don't get the option to use it as a mass storage device, so I can't transfer files between phone and computer.
I got a new usb cord about two months ago and it worked up until now, so I don't think it's the cord.
I've tried taking out the SIM card and battery, restarting phone/computer, installing KIES, toggling USB debugging... not sure what else to try.
Anyone else ever have this problem?

Go into device manager on the pc with the phone plug in. There will be a usb port with an exclamation mark on it. Manually update the driver to android adb interface.
Sent from my Nexus 5 using XDA Free mobile app

Ok I just tried that... I don't see any exclamation marks anywhere.
I tried reinstalling the drivers from Samsung's website and that didn't work either.

mkmossop said:
Ok I just tried that... I don't see any exclamation marks anywhere.
I tried reinstalling the drivers from Samsung's website and that didn't work either.
Click to expand...
Click to collapse
Your pc isn't recognizing that your device is connected at all. It's not a driver issue. It's either the usb cord or the usb port on your phone that's not working
Sent from my Nexus 5 using XDA Free mobile app

Hmm alright... I'll buy another cord and see if that works... thanks.

@jd1639 nailed it, imo. You've either got a bad cord or a bad port. I'd try a different USB port first, and if that doesn't solve it, you know you've got a bad cord.

This seems to be a funny issue cause now all of a sudden it's working... not sure what happened. It could have been installing the driver and then restarting my computer, or playing around with USB debugging again.
I've read other places of guys trying different cords, etc and nothing working, and then they just take their battery out and back in and then it's working again. So ya no idea.