Tap Settings.

Tap General.

Tap Language & Region.

Tap Add Language....

Tap the required language.

To select the new language as the default language, tap Use ‹language› .

To keep the current language as the default language, tap Use ‹language› .

To subsequently select another language as the default language, tap the move icon next to the required language and drag it to the top of the list.

Tap Continue.

Slide your finger upwards starting from the bottom of the screen to return to the home screen.