I just came across this video that David PA7LIM published a few days ago. Look forward to an iOS version if possible. What's concerning is the REF reflector ban (per his YouTube intro!
I am using terminal mode with the 705 and it's pretty much always smooth sailing.

I can now connect to all XLX and DCS (I am banned on all REF reflectors) reflectors via my Android device without any issues with port forwarding.
I am using terminal mode with the 705 and it's pretty much always smooth sailing.