You get the t1s and the t1d. The t1d is tello specific and bluetooth only. The t1s can connect with Bluetooth or USB or wireless with a dongle that come with it. I used my neighbour's one with the cable a few times and it's good. With my wireless gamepad it's OK but once I use the repeater it becomes lag central because of all the interference. Needless to say I have ordered a t1s and I am waiting patiencely for it.I'm sure the Tello is much more capable than I'm giving it credit for in windier conditions. My flight skills just aren't there yet to compensate for the wind.
So you have GameSir T1d controller? And connecting it to the phone via a USB cable eliminates the laggyness people complain about with the bluetooth connection option? I'll be curious to hear your experience. Do you fly the Tello with the controller. If not why not?