This will enable users to tap an area on the side rim of the phone to activate the shutter button, making for easier selfies.
Why no one has thought of this – with the proliferation of selfies all over the internet – and why someone would think of a long stick for the solution to this problem is beyond us. Good on you, Samsung.
This feature was supposed to debut on the Galaxy S5 but was decided against it on the last moment.
Another impending improvement to selfies worldwide is the 3.7MP front-facing camera of the Galaxy Note 4. Usually, Samsung goes with the 2.1MP camera, but this is a definite improvement, allowing users to take selfies in WQHD (2560×1440) resolution.
To cap off our camera-centric information about the Galaxy Note 4, we have heard that the main shooter for the device will be a 16MP Sony IMX240 camera sensor with optical image stabilization (OIS), capable of giving us UHD (3840×2160) video at 30FPS.
Source: Android Community