I have an unlocked Trek 2 HD (K88) and installed a T-Mobile data only sim. I know the Trek has the necessary bands for T-Mobile but I am finding that the signal is bouncing between bands 2,4 and 12 which is causing delayed connections and disconnects. I am watching this via LTE Discovery. Is there anything I can do to make this signal more stable on this tablet? Is it possible I got a bad tablet? Any help is appreciated.