: Scroll down to find 言語と入力 (Gengo to Nyūryoku). It usually has a globe or keyboard icon. Select Language : Tap the top option, 言語 (Gengo).

The standard workaround for this is an app called .

A custom ROM like LineageOS 17.1 comes with full AOSP language packs. You can set the UI to Thai, Vietnamese, Russian, Hebrew, Portuguese – anything Android supports.

Unlike global variants of Android devices, which typically include a "Language & Input" menu with multiple selections, Docomo devices often feature a truncated list or require unlocking procedures to access hidden menus. This paper delineates the full spectrum of solutions, from basic settings adjustments to advanced firmware replacement.