my little sister have a problem with her phone(I9001 Galaxy S PLUS ).
The i9001 usb mass storrage is damaged.
After resetting (formatting usb mass storage) (force reset in recovery mode because It can't wipe the memory in the settings menu.)
This solution will work for a few days.
The next day (or with luck a few days) the phone will say again: Mass storage damaged.
How can i fix this problem ?
The phone is running stock (2.3.6).
(i have also this phone but its not on stock its is on cyanogen11)