Default LTE only mod!

I saw some xperia devices that can activate LTE only mod by rooting and flashing roms... I want to know is there eny options to make LTE only mood???
I know a method -
*#*#4636#*#* and select LTE only from that service menu...

Is there enything that that???? 😄

From my Xperia Z monster 👹👹👹
Sony Xperia