I had trouble in connecting Samsung Galaxy S2 in Mac as it was not detected as USB device. The phone was detected fine in Windows 7 but not in Mac. If you are exeriencing the same problem here is the solution for you:
- On your Samasung Galaxy S2 phone, go to Application->Settings
- Go to Wirelessand Network and select USB Utilities
- Click on Connect Storage to PC
- A message should pop up: Connect USB cable to use mass storage (Please note that you have to connect the cable to your mac when the pop up come not before that)
- A green android robot should be on display with an option of “Connect USB storage“, click on it
- The green robot turns orange now and now you can access the files on the SD card of your phone
