This phone looks like complete failure, just DOA !! Oneplus has its own forums filled with ppl looking to giveaway their invites and still no one taking it !! Seems the phone specs are equally responsible with invite system for the failure...
I'm puzzled as to why they decided not to make the phone compatible with the majority of US carriers' LTE bands. That couldn't have helped sales at all.
250 - 300 million people in USA
1 billion in Europe (let's not even mention Asia)
maybe there was a spec/cost trade off and they weren't too concerned about North America.