title: Enable the SD Card while USB Debugging?
body: <p>I am developing a phone app and I'm testing it with my Droid RAZR with OS version 4.1.2</p>
  
  <p>I need the phone to be able to use its SD card, and prevent the computer from using the USB connection as a "mass storage" connection, which causes it to take over the SD card (it can only be mounted to either my phone or the computer, not both).</p>
  
  <p>You used to be able to connect to the computer in "Charge Only" mode, which would keep the SD card active with the phone, but that no longer seems to be an option.  There is only Mass Storage (computer uses SD card), Media Device (same story), and Camera (same there too).</p>
  
  <p>Is there another option?  Perhaps some way to disable the mass storage from the PC's side but still retain the USB Debugging?</p>