[sciurius]

Ah, yes, that link is about the 'purple haze' problem that sometimes occur after tweaking the screen resolution.

My S4 and S7FE are 64GB and 64GB SDcard. WiFi only (no SIM). They would be identical if it weren't for the Android version (10 on S4, 11 on S7FE). The S-pen is ideal to make annotations in MSPro.

Note that the screen of the S7FE is larger than the S4 screen, but it is slightly less sharp (contrast, brightness, viewing angle). Also note that IMHO the S7FE is just a little too big to conveniently hold in your hand while reading for longer periods of time. I bought the S7FE as a replacement for the S4 when its screen broke but I decided to have it repeaired to be used as a back up. Now I use the S4 for everything and the S7FE for gigs only.

Also, the Tab S4 (10.5" screen) is not a Galaxy Tab 4 (10.1") so I don't know how things will work out for you.