Originally Posted by thomasmeredas
The thing is that I don't want to root my phone because I don't want to lose my warranty......also have the latest kitkat
The only other idea that I have is to long-press on space. And eventually on the button that is two places left from space - after a long-press you might get to see a list and the button like a globe is the one that switches between languages.
Also check what other version you have on English and Greek after the > sign in settings - that part is not present in my firmware so extra settings might be there.
Also the language availability might depend on the app itself - so also do a test in the Samsung default SMS app.
N9005 Universal Root De La Vega / Mobile Odin Pro, Knox 0x0, MJ7