I read a really great topic on moving my DJI App and Album to the external MicroSD Card to save internal storage. I am using two Samsung Tablets to fly, the Galaxy S2 only has 3 GB Ram and 32 BG Storage, so I tried it, but because my MicroSD Card is slow, the DJI Fly App failed and I had to reload the App, one of the symptoms was the loss of the Battery status indicator... Along with the Three Dot Menu) top right), the Go Back Arrow (top left), and the Attitude/Map (bottom left).
My other tablet is the Galaxy A8, but since it has 4GB Ram and 64 GB Storage, I did mess with it…
By the way, lots of other members who did this, using fast MicroSD Card had no problem at all.
That's all I've got, other than reloading the App…
Good Luck!