I cannot connect my Samsung Galaxy Spica i5700 to the PC using PC Studio. My PC can only see the SD card, but not the device. I am using Windows 7. Also, I have problems with Bluetooth. I cannot recive or send any file. Another problem is that I do not know how to change the time when the phone autoblocks. If i'm trying to read a message the display get's black in within 10 seconds. Does anyone know how to help me fix my problems?