USB device not recognised / This device can perform faster

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A month or two ago I started experiencing problems while connecting my S2 to the PC or laptop using the data cable.

When I connect the cable to my S2 on the PC or laptop it comes up with the balloon messages in the system tray:

USB device not recognised.

Then a short while later it comes up with another balloon message:

This device can perform faster.

Sometimes while transferring data, it will disconnect and the file transfer fails.

Sometimes if the cable is moved slightly it will cause the device to disconnect from the PC.
And, of course, the file transfers are much slower than they should be and much slower than they used to be.


GT-I9100 Rooted.
I9100XXKKI3
Gingerbread 2.3.6 Stock (Frankenstein)

I haven't touched any ROM or flashed anything on this in like over 8 months so it's nothing to do on that front.
I removed micro SD card and tried reconnecting again, still the same problem.
I've tried different computers, still the same problem.

I've used different cables, still the same problems. Tried enabling and disabling USB debugging. Same problem still remains.

The USB cables and computer and laptop work fine with my S3.
All the correct drivers are installed for the S2.


I'm resigned to thinking it's a hardware issue as I've exhausted other options. Is there a simple fix or will this need sending back to Samsung?

I've had the phone over a year now but someone told me the warranty is two years?

All help appreciated guys. Thanks in advance.

Why don't you upgrade to ICS?

Originally Posted by przemcio510

Why don't you upgrade to ICS?

Probably because his USB port doesn't currently work properly.



@OP, this is often caused by a dirty or faulty USB port. You can try cleaning it, but you may need to replace it.

Try cleaning it out with a dry toothbrush first.

If that doesn't work, take the battery out, and try cleaning the port with a small q-tip with a small amount of isopropyl alcohol; let it dry for a while after that, then replace the battery.

If THAT doesn't work, you'll probably need to replace the part for the USB port.
If your warranty is still good, you could try to go that route, but you'll need to unroot your phone. Otherwise, I've heard it runs about $15 for the part, and you can replace it yourself. If you don't feel up to it, you can have a cell repair shop or Samsung service center do it for you, but it will probably be significantly more expensive than $15.

My opinion based on your description is the USB socket on the phone is wearing out/damaged. The USB socket is on a small circuit board separate from the main logic board. It's easy to replace and the part is cheap on EBay. Search for a disassembly/tear down video and judge whether you can do it yourself.

Sent from my GT-I9100P using Tapatalk 2

Thanks for the very quick responses guy. They were very thorough as well.

I will look into cleaning the port and if it still doesn't work I'll consider having it repaired. My soldering skills were excellent but I haven't done it for a few years, so may leave it in someone else's hands.

I haven't upgraded to ICS as I was very happy with my phone at the time. Also, a couple of friends who had upgraded to ICS on their S2 regretted it due to numerous problems, which put me off upgrading.

You can still use mobile odin and theres no soldering needed with the usb,it comes as a board with a ribbon cable.

Sent from my GT-I9100 using xda premium

Originally Posted by theunderling

You can still use mobile odin and theres no soldering needed with the usb,it comes as a board with a ribbon cable.

Sent from my GT-I9100 using xda premium

I've had a look on the Samsung website here:
w ww.samsung.com/uk/support/warranty/warrantyInformation.do?page=POLICY.WARRANTY

It seems as though the warranty period on my phone is 24 months so I might just get it done via Samsung.
I'll contact them in the morning and see where I stand. If not, then the replacement USB board connected by a simple ribbon cable sounds like a doddle. I've seen a grade A condition part on ebay for about £8 delivered.
Thank you once again.

Originally Posted by Communist99

A month or two ago I started experiencing problems while connecting my S2 to the PC or laptop using the data cable.

When I connect the cable to my S2 on the PC or laptop it comes up with the balloon messages in the system tray:

USB device not recognised.

Then a short while later it comes up with another balloon message:

This device can perform faster.

Sometimes while transferring data, it will disconnect and the file transfer fails.

Sometimes if the cable is moved slightly it will cause the device to disconnect from the PC.
And, of course, the file transfers are much slower than they should be and much slower than they used to be.


GT-I9100 Rooted.
I9100XXKKI3
Gingerbread 2.3.6 Stock (Frankenstein)

I haven't touched any ROM or flashed anything on this in like over 8 months so it's nothing to do on that front.
I removed micro SD card and tried reconnecting again, still the same problem.
I've tried different computers, still the same problem.

I've used different cables, still the same problems. Tried enabling and disabling USB debugging. Same problem still remains.

The USB cables and computer and laptop work fine with my S3.
All the correct drivers are installed for the S2.


I'm resigned to thinking it's a hardware issue as I've exhausted other options. Is there a simple fix or will this need sending back to Samsung?

I've had the phone over a year now but someone told me the warranty is two years?

All help appreciated guys. Thanks in advance.

This is a Cable problem. The USB port of your device is wider now, that's why the cable doesn't fit well. Buy a micorUsb cable for blackberry, it's always very full and thick, then use it to connect your phone. The issue should be resolved.

I once had the same problem with my Nokia N8 and using a Samsung cable (which looks fuller and thicker) solved it.

Yeah warranty should be 2 years BUT youll have to unroot it first if your sending it to them.
They may also wipe your phone and stick on 4.0.4.

If you get the board yourself,check the number is going to be the same i.e the spare one I have here is GT-I9100 rev2.2.

Also other people have got a replacement board and the mic doesnt work(think the boards are sold as refurbished).

So its up to you which option you go for.



Sent from my GT-I9100 using xda premium