Support Way to change default storage location?

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http://androidforums.com – The phone defaults to store everything on the internal storage instead of the SD card. I called Sprint, but they did not know a way. I cannot directly acces the internal memory through the USB. Is there a way to make it store everthing on the SD card? For instance I shoot video and it all goes into the internal memory. The only way I can get it onto my computer is to first move it to the SD card, then I can move it to my PC. (General)