If you are jealous of your friends who have recently bought a brand, new Galaxy S7 Edge, you don’t have to be anymore as there’s a way to convert your Galaxy Note 3 into S7 Edge and also have Note 5 features.
Samsung has also stopped supporting Note 3 and since there’s no official TouchWiz Marshmallow updates (yet), this will also give you the latest Android 6.0.1 running on your Note 3.
(S7 Edge Always On screen working!)
To do this, there are various different ROMs you can use but I found DarkWolf ROM to be the best so far that I have tried. Based on latest S7 Edge SM-G935F firmware, the DarkWolf ROM brings you all of the software features of Galaxy S7 Edge to your Note 3 including Edge screen panels, S7 Edge apps, Always On screen(yes it works!!!), Game Launcher (so you can record games while you play), and even S7 Edge camera!
(S7 Edge camera working on Note 3! Not all modes work but basic photos/videos work fine along with full 4K video recording for back camera and 1080P on front.)
Now, this ROM isn’t perfect as NFC does not work but it is still usable as daily driver since voice calls work well and everything else pretty much works out of the box.