Sony Xperia Z4
The Sony Xperia Z4 is the followup to 2014's Sony Xperia Z3, and it one-ups that device in nearly every way. It boasts a deisgn familiar to Sony's Xperia line, though its specs get nice bumps across the board.
Inside is Qualcomm's 64-bit Snapdragon 810 octa-core chipset, 3GB of RAM, a 20.7 megapixel rear camera that can shoot 4Kv video, a 5.1 megapixel front camera and a 5.1-inch display with 1920 x 1080 resolution.
Other Xperia Z4 specs include a 2,930 mAh battery, is just 6.9mm thin, and has 32GB of internal storage with a microSD slot. It's also water-resistant and dustproof, and has a metal frame holding the chassis together.