
Problem:
I was facing problems connecting my Samsung Galaxy S2 on Ubuntu, which is particularly annoying bearing in mind the total lack of support...
Problem:

When I plug it into my Linux machine, it is recognised and I can see the contents of the root of /sdcard and the SD card but I cannot access the contents of any file or folder as all the folders are empty.
When I connect my phone to USB there is no “mount USB” option but just MTP application in the home screen.
Fix:
I will call it a work around rather than a fix. Here is how to do it in steps:
- On your android phone, go to Application->Settings
- In there, go to Wireless and Network and select USB Utilities
- Click on Connect Storage to PC
- A message should pop up: Connect USB cable to use mass storage
- Now connect the USB cable to computer
- 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
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