The Asus Zenfone 2 hasn't officially hit the United States yet, but it's available in other countries. The biggest model comes with a Full HD display and 4GB of RAM, with the latter being the most notable feature. That much RAM is unnecessary for most users, but it's perfect for power users and gamers. It's a dual-SIM device, too, which is nice for some people. I was interested in the device until I found out that the 3,000 mAh battery doesn't last much longer than smaller devices with smaller batteries. Oh, well. 4GB of RAM will surely interest some users!