Samsung Galaxy S4
Samsung's Galaxy S4 is a remarkable device. Its 5-inch display puts out 1,920-x-1,080 pixels; its 441 dots per inch leave Apple's Retina display in the dust. A Qualcomm Snapdragon 600 SoC has four 1.9GHz ARMv7 cores and an Adreno 320 GPU that's optimized for HTML5 and 3-D software. Galaxy S4 has 2 GB of DDR3 memory. The 13MP rear camera has a 4X digital zoom, and both cameras capture 1,080p video at 30 frames-per-second and can record video or take pictures at the same time. The unit is secured by Knox, a kernel-level BYOD solution. Samsung also sets Galaxy apart with two-app multitasking, ad-hoc networking, collaboration for as many as eight devices, and improvements to its AppShare Cast wireless screen sharing. There are also major improvements to Android 4.2's device function toggling, a beefier battery with full-day power management, and an easy-to-use interface for setting up as many as five lock-screen widgets. Pricing starts around $200 with a two-year contract.