[dingo_bat]

What features did the Note 4 have that the Note 7 does not? I think the IR blaster is definitely missing.

[arvinsim]

Removable battery for one.

[sengork]

UV light sensor which for some reason needed location data to measure correctly. I've never understood why this is required as it should be able to read raw data based on incoming light.

[sengork]

And less megapixels for the camera, although this is not a conclusively bad thing...

[alastair]

expandable memory

[dingo_bat]

It's there.