I've tried EVERY piece of advice I have discovered. Without OTG, with OTG... No luck. Do these connection steps, in order; do those connection steps, in order... No luck. I can connect the T1s with Bluetooth to my Android and the stock Ryze Tello App and fly. What was the secret for me? In settings --> Bluetooth Controller Settings you see your controller listed (because you connected it already in your phone's Bluetooth settings) but it says it's disconnected, so poke it and, voilá, it's connected and so are you, so go fly. Re TelloFPV at this point it's Settings --> Controller --> Scan for T1D + Flypad, which you poke. TelloFPV discovers the T1S, but it is NOT connected to TelloFPV, just the phone. Actuate the joysticks and watch your phone's screen jump around while your Tello just stares at you. Here, I am stuck and sunk. Apparently TelloFPV + T1s is not in my future. To all you 1000s of happy pilots, don't crash! Crashing with TelloFPV I don't have to worry about; you have to fly first. I'm ground-bound and not loving it. I'm stuck with stock, I guess. Oh, well, one Tello App is better than none.Just remember to switch off bluetooth (even if you don't use it)!