In the US, I purchased an AT&T branded, supposedly unlocked LG G Flex 2 (LG-H950) at Newegg (Item 9SIA2KN31H7589, which was then sale priced at $245). I put an Airvoice Wireless (AT&T MVNO) SIM in and was able to make calls and use mobile data with no problem. However, I didn't want to take...