Just to let some of you know that the GameSir T1s is not the only one that works with the Tello through an OTG cable. I have bought a GameSir G4S. It can connect through a couple of ways. 1) Directly through OTG cable (that's what you want for Tello), 2) Bluetooth and 3) 2.4Ghz Wifi through it's own dongle hidden in its base. You can also use it with an amazing array of other devices. It looks absolutely stunning and has rubberized grips and uses its own lithium battery inside which is charged with a supplied micro usb cable. If you use it with the Tello flying wired I would suggest using the cable supplied. It also flips open to accommodate most size phones. It works PERFECTLY with the Tello and TelloFPV app.
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Hi! Absolutely no complaints. Thing works like a boss with the Tello FPV app. Always use it wired though and remember to put your phone in airplane mode. Keep away from Bluetooth!
Hi. I bought my Tello last June, I have an Android cell phone. In my case I spent a month learning WITHOUT a controller which I consider was positive. The vast majority of users believe that it is convenient to have a controller that can be wired via OTG. Just yesterday I got a Gamesir G4s controller, I installed it via OTG to the Moto One Macro (Android) with the Tello FPV app. I hope the wind stops to prove it. Regards.