You selected the language for your phone during set up. To change it:
If you don’t see the language you want, tap
to add it, then drag it to the first position.
All languages added to the list will appear on the keyboard's spacebar.
To remove a language, go to Settings > System > Languages & input > Languages, then tap
> Remove, select the language, and tap
.
If you want a keyboard for a language that isn't a display language:
Then, switch between languages on the keyboard by tapping
.