we are trying the pix4d discovery and we flight before successfully. But today for a new test with our Phantom 2 vision did not find SD card.
Our Output directory is /storage/emulated/0/Pictures
SD card and internal memory of the device have some gigas free and the smartphone go normally (z3 compact)
second question, how to localize Output directory on SD card and not in intern memory?
An SD card is typically referred to as /storage/sdcard1
For your second question, you can choose where to save the pictures in the settings.