My BT device IS paired with my Samsung Tab S5e tablet. When I attempt to add a preset for my Meade LX-200 classic I get to the point where the program says "select device" but SkySafari 7 drops out and my screen returns to the tablet home screen immediately. Phone is using the latest update to the Android OS.
I had no problem linking the BT device and adding a preset on my Samsung Galaxy Z-Fold 3 and I can use the phone to control my telescope, but I would prefer to use the larger tablet.