I want to create this thread where every VFRnav pilot can post a few tips about the equipment.
On my old tablet and phone I had been using the audio output (3.5 mm jack) for the airspace and traffic warnings, feeding it the classic way via cable into the intercom. Now I’ve bought a brand-new small tablet and phone. Neither has a small jack anymore. 
….To still be able to use my setup the same way, I bought a USB-C audio-power adapter.
…those who connect via BT (Bluetooth) don’t need this solution, of course.
Happy flying,
Karsten