Brand new
Tello, did a firmware update and latest app software for iPhone X.. didn’t find this group until after first flight and error discovered. Luckily I restricted the altitude to 2 metres and flew indoors for first flight. As soon as I tried video recording the app crashed and my nice new
Tello hovered at 2 metres totally out of control from the app. I stood on a chair and pulled it down - no damage done. Turning off location services and reinstalling all s/w does workaround the bug ( as described in this thread) but if not fixed very soon the
Tello reluctantly goes back to PC World for refund!