When I connect phone to PC with miniUSB-USB cable, touch screen is behaving totally different than normally. It's like ignoring most of the touches.
For example, unlocking the screen (because of dragging a lock) is impossible.
Another example, when I want to click some button on the screen, it freaks out. It behaves like if I clicked in some other place or haven't clicked at all.
Phone's hardware buttons responds correctly.
If I plug phone out, everything is back to the normal.
The problem doesn't appear when I'm charging my phone with a charger, from the socket.
I am developing an application, so I use "USB Debugging" option. However, it doesn't matter if it's on or off, screen still lags badly.
I also noticed that my phone is automatically charging when connected to PC's USB, but it seems I cannot turn it off and I have no idea if this is the cause.
Anybody knows what's wrong or how to fix it?
Samsung Galaxy Mini (GT-S5570)
Android 2.2.1
try a different cable or a different port. I've had this kind of trouble with my device on certain USB chargers and I've been told it's because of grounding or something electrical like that. never had any trouble with a cable to a PC though.