Howdy All ... To re-state the obvious ...
I have a brand new Tab S2 8.0 T713, purpose bought for the Mavic. As soon as I connect I get multiple flashing of the OpSys about connecting the controller and which app do I want to run (whether DJI GO/GO-4/Litchi is installed singly, or in combination). The message disappears faster than I can click on it. When I run the apps (any app) it can't see the aircraft.
Developer ... USB Debug ... RDNIS/LAN setting ... Tablet powered down completely ... Aircraft/Controller powered and connected ... Connect Tab ... power up Tab ... Works Fine. At least until I disconnect and re-connect the Tab - then I'm in a world of hurt again.
This process (thanks VERY much to those above who worked it out!) will get me through, but I am going to chase down a T710 on eBay, and sell my T713 (anyone want a brand new Samsung Tab 2 8.0 Inc? Perfect for your new Mavic ... Errrr ...)
Once it's working, I'm impressed with the Tab 8.0 combined with the Mavic. Screen seems bright enough for outside use with a little shade (will start looking for a sunshade at some point) and I much prefer the flexibility of the Android operating system.
Ken