Slide two fingers downwards starting from the top the screen.

Tap the settings icon.

Tap General management.

Tap Language and input.

Tap Language.

Tap Add language.

Tap the required language.

To select the new language as the default language, tap Set as default.

To keep the current language as the default language, tap Keep current.

To subsequently select another language as the default language, tap the required language.

Tap Apply.

Tap the Home key to return to the home screen.