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    copied!<p>As of Android 4, <a href="http://google.com" rel="nofollow noreferrer">the wise ones</a> have removed USB Mass Storage support for accessing the internal phone memory. So you no-longer get direct block-access (or a driver letter in windows). You can usually choose on the phone between MTP, or PTP (Media / Photo Transfer protocols) for whichever your OS supports better. </p> <p>If your device has removable storage it should still support USBMS (with a drive letter) for that partition. At least Android still supports that, but your Manufacturer or Carrier-ware may still fail you here.</p> <p>However, when it comes to the phone memory, there was a <a href="http://www.androidpolice.com/2011/11/18/impromptu-qa-session-with-android-engineer-dan-morrill-brings-to-light-reasons-behind-galaxy-nexus-lack-of-usb-mass-storage/" rel="nofollow noreferrer">trade-off made in Honeycomb</a>. Unified storage prevents wasted space (no more separate storage for phone / data, and having one fill up first and having confused frustrated users trying to move apps to SD, etc). The trade-off requires that:</p> <blockquote> <p>Android can no longer ever yield up the storage for the host PC to molest directly over USB.</p> </blockquote> <p>Initially for Mac and Linux where support for MTP/PTP has been slower, You can use an FTP app on your phone. But now there is an increasing number of Desktop (PC/Mac/<strong>Linux</strong>) apps that understand and support the MTP or PTP protocols. You just don't get block access and so you can't get a drive letter without some hackery / third party software.</p> <p>There have been hacks over the years to make FTP or WebDav or some other protocol work behind a windows drive letter, and something like could still work work for these MTP/PTP protocols, but I have yet to see any such consumer usable software for windows. </p> <p>If your Linux distro doesn't include MTP support, <a href="http://gmtp.sourceforge.net/" rel="nofollow noreferrer">gMTP</a> seems pretty popular.</p>
 

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