The "USB Connected" notification stays on after the USB is disconnected, there's no way to evict it other than a reboot but now will reboot only if USB is reconnected to PC or Charger.
How it as evolute:
I was so pleased by my new Galaxy S cell 3 days ago after a week of exploring and managing to get the best carrier and plan for this bright Samsung Smartphone. Then, the day after it lockup, but removing the battery for few seconds then replacing it back fixed that problem for that day. The following day been great too up the second lockup at night and this time, removing temporarily the battery did not permit to have the cell working anymore.
So today I have been trying all day to determine under what condition these lockups occur. During those tests, I've first determined that during charging or during USB PC connection, I could repower up the Galaxy S. Then the cell could work for long period of time if connected to USB PC or power supply, but when I remove the USB cable, the firmware fail to detect that there is no more USB connection and start to flash every couple of seconds the message "USB connected" replacing the status bar at the top of the screen.
Then after several minutes, the cell freeze, and only by removing for few seconds the battery and then plugging the charger again, will permit to successfully power up the phone.
I have of course made a Hard Reset to Factory Default, to no avail, during those tests. I think it's a hardware malfunctioning around the USB Port section. The connector look good seen with loop and both USB cable seem ok.
If it's corrected by an update, I wonder if I'll be able to re-flash under this condition.
Edit: Been seen on Samsung Captivate and Vibrant too here: my captivate wont turn on and says usb connected - Android Forums
Best solution follow:
How it as evolute:
I was so pleased by my new Galaxy S cell 3 days ago after a week of exploring and managing to get the best carrier and plan for this bright Samsung Smartphone. Then, the day after it lockup, but removing the battery for few seconds then replacing it back fixed that problem for that day. The following day been great too up the second lockup at night and this time, removing temporarily the battery did not permit to have the cell working anymore.
So today I have been trying all day to determine under what condition these lockups occur. During those tests, I've first determined that during charging or during USB PC connection, I could repower up the Galaxy S. Then the cell could work for long period of time if connected to USB PC or power supply, but when I remove the USB cable, the firmware fail to detect that there is no more USB connection and start to flash every couple of seconds the message "USB connected" replacing the status bar at the top of the screen.
Then after several minutes, the cell freeze, and only by removing for few seconds the battery and then plugging the charger again, will permit to successfully power up the phone.
I have of course made a Hard Reset to Factory Default, to no avail, during those tests. I think it's a hardware malfunctioning around the USB Port section. The connector look good seen with loop and both USB cable seem ok.
If it's corrected by an update, I wonder if I'll be able to re-flash under this condition.
Edit: Been seen on Samsung Captivate and Vibrant too here: my captivate wont turn on and says usb connected - Android Forums
Best solution follow:
I had the same problem as everyone else in this thread. My phone worked fine for two months. One day I was wearing a nasty imitation leather jacket and had the phone in my shirt pocket. It got kind of hot where I was and it got "steamy" inside that jacket before I took it off. The next time I looked at my phone it was doing the "USB Connected" dance. I tried power cycling and couldn't get the phone to power up, just got the grey battery symbol.
I tried a variety of things to fix this with marginal success. When I returned home I got the connector under a microscope and saw that there was some crud in the connector:
You really couldn't see it with the naked eye, you need at least 10 to 20X magnification and a good light source to see it. I turned off the phone, took out the battery, and squirted some canned air ("Dust Off") in the connector and blew a lot of that stuff out. However, there still was some dirt on the contacts. I took a small piece of coffee filter paper, wrapped it around the end of a small twist tie, soaked it in isopropyl alcohol, and swabbed out the connector. Here's the clean connector:
You need to be very careful about sticking things in the connector. The little tab that holds the contacts is fragile.
I powered the phone back up and it no longer displays the "USB Connected" message. It works correctly when I really do plug in a USB cable, too.
Why does this fix the problem? Well, I used to design cell phones, and I know a thing or two about the external connectors on phones. The phone has to have some way of detecting that something has been plugged into the connector. Micro USB connectors do not have a mechanical switch to detect the presence of a plug in the socket. If these connectors work the way USB OTG (On-The-Go) connectors work, there is a resistor in the cable between two of the pins. The phone attempts to pass a small amount of current through that resistor to detect the presence of the cable. When there is debris in the connector, like cotton fuzz from clothing, tiny bits of soap from washing, and tiny flakes of dead skin, and you add humidity from perspiration or rain, etc. you create little blobs of slightly conductive goo that can bridge the gap between the pins. That blob of goo looks just like a resistor to the electronics in the phone. So the phone thinks there's always something plugged into the connector. Why have some people been able to fix the problem with settings then? I suspect that they found settings that cause the phone to stop checking for a USB cable or to ignore the signal that tells the OS that something is plugged in.
I'd like to hear whether this solves the problem for others. While we're at it, does anyone know what those two extra contacts way at the back of the connector are for? Those aren't standard USB pins. I suspect they are used in manufacturing test.
Now if Verizon would only release Froyo for this phone...
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