This disproves the theory of interference said by someone else online. Thanks for letting us know about the 3G availability on both sims. I desperately need such phone for the same reasons you quoted and probably hunt for that model. But having said that how was the battery life though as HTC desire 816 has a great standby life.
---------- Post added at 04:40 PM ---------- Previous post was at 04:38 PM ----------
Thanks dude, I was so far living in the impression that it cannot be possible due to radio interference and battery life reasons I read somewhere online.