i wish they that they were american based or at least european or japanese; the money I've ended up flushing down the toilet on chinese mobile devices taught me the hard way that american carriers eventually ban them using technical excuses so counterfactual that the pretext is obvious to anyone who knows the tech.
still, though, i'm highly tempted considering that it both costs less than the nighthawk m7 and has WAY MORE features/capabilities, so i should still get atleast 3-5 years of use out it before it too gets blocked by at&t or t-mobile.