Digital zoom is only available with iOS devices. Android devices do not have that option yet like gsxr07boy said. That has been the DJI statement for a few months now. Hopefully Android will get updates for that option some day.
Phantom Robin Posted at 2017-2-21 01:25
If you change your resolution from 4K tot 1080p or 720P, litchi will crop the image so you can zoom in, and have that ability link to a hotkey
Thanks Robin, I posted back in July , and had figured it out since.
Aardvark Posted at 2017-2-21 04:47
And as a reference, DJI Go 4 will do a digital zoom (2X) up to and including 2.7k video on Phantom 4, but not on 4k video.
Haha! Total nonsense from DJI again! Surley zoom from 4k would have P4p or P5 to push people for newer drones...