As if the reappearance of the Nokia 3310 and BlackBerry earlier this year weren’t enough, Samsung has decided to go a bit retro with its latest phone. The terribly-named-but-actually-quite-nice-to-look-at SM-G9298 (confusingly, it’s also called the “Leader 8”) has two 4.2-inch high definition screens; one on the outside and one on the inside. The whole phone is made from aviation-grade …