Letter "R" is for Royal and phones named with this letter will be premium devices combining power, design and productivity.
"W" as in Wonder" which will describe high-end phones.
"M" as in Magical with mid-tier phones offering decent performance at affordable price.
Young collection with letter "Y", with entry-level phones which have a huge advantage offered by their low price tags.
Additionally, the Korean manufacturer will continue to use suffixes for its phones: "Plus" will stand for a refresh or upgrade of an existing mode while "Pro" will describe phones with a hardware QWERTY keyboard. The usage of "LTE" is pretty self-explanatory.