Currently on android version is 8.1,
Under the network & settings, mobile network option, preferred network type, I see 4 option menu, to choose between
1) 2G/3G/4G
2) 2G/3G
3) 3G
4) 2G
But no option for 4G only, does newer android version have an option to choose only 4G as preferred network type directly from the above menu.