Red underline of spelling mistake

[Appleisthebest]

Can anyone tell me how to show red underline when i misspelled something in s24 ultra? Honestly its driving me crazy. 

[lminvti]

Hi there, try opening the samsung keyboard settings menu and there should be auto spell check feature you can turn it on or off

[AndrewL]

@Appleisthebest: Further to the above, please head to Settings > General management > Samsung Keyboard settings > Suggest text corrections > English (UK) > On. 

With this feature enabled, you may wish to tap the Back button > Auto replace, and toggle this option off. Please note that misspelled words will be underlined in blue. 

[Appleisthebest]

It does not work. Even changed system language to "English UK" language and types English uk then  suggest text correction english uk still doesnt show blue underline neither in mail, messangers, nothing.