Drawbacks
By design, MTP devices (like PTP devices) are not treated as a traditional removable drive. The actual file system is implemented by the device, not by the computer's operating system. In theory the operating system may hide this difference, but this is not the case on Windows or Mac OS. This also means that conventional file system recovery tools will be of no use if the drive is corrupted, or crashes.
As opposed to USB Mass Storage, a number of operating systems do not support MTP out of the box. Some even require third-party software.
Neither the MTP nor the PTP standards allow for direct modification of objects. Instead, modified objects must be reuploaded in their entirety, which can take a long time for large objects. With PTP/MTP, the file size must be known at the opening stage.[7]
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