One touch backup
#Sony

Washable phone with soap and water
#Kyocera

Sharp Pantone 5
Radiation Detection
#Sharp

Clari-Fi visualization
#Sharp

Liquid metal secure phone
#Turing

Night Stand
Displays date clock and weather on edge of the screen
#Samsung

Continuum
A tiny separate ticker display below the nav keys. dedicated for notifications.
#Samsung

Smartbar
Bottom nav bar that merged virtual buttons and context menus depending on the app.
#Meizu

Slide Aside
feature allows you to quickly switch between three open apps (or tasks) using a three finger gesture. Tap the Slide Aside switch to toggle it on and off.
#LG

Direct call
#Samsung

Freestyle
Make fully immersive launcher layout without grid and custom stickers which fit wallpaper
#HTC

PlayLink
#Sony

VeilView
Sharp's proprietary VeilView technology intentionally limits the viewing angles so that anyone looking from the side sees nothing but a geometric pattern, while the display remains readable to the phone's owner. It's designed to prevent prying eyes from reading over your shoulder in crowded subways, and many Japanese people buy screen protection films for their phones that includes similar functionality. Enabling VeilView significantly lowers the contrast of the display when looked at head-on, and the pattern is still slightly viewable, but it does achieve its goal of making text and images only really readable to the primary user of the phone. It could be useful in certain situations for those concerned about privacy, and it's easily switched on or off via the notification bar — a lot more convenient than constantly applying and removing an adhesive film.
Good viewing angles if you want them
Thanks Vasya for the video
#Sharp