Once you switch to English, the Fujitsu F-04J transforms from an indecipherable Japanese brick into a fully usable, rugged, waterproof smartphone with a nostalgic slide-out keyboard. Enjoy your "keitai" in the language you understand best.
If your configuration is completely corrupted and you cannot navigate the menus, performing a hard factory reset will restore the initial device setup screen, allowing you to select your language preference from scratch. Note: This wipes all user data. Turn off your device.
However, "full" language conversion—removing all Japanese elements—is technically constrained by the locked bootloader and proprietary Docomo software layer. The F-04J remains, at its core, a domestic Japanese device. Users localizing this device must accept a hybrid environment where system menus are English, but carrier apps remain in Japanese. change language in fujitsu f04j docomo full
Once the system language is in English, your default keyboard might still default to a Japanese layout. Go back to > System > Languages & Input . Tap Virtual Keyboard and select Manage Keyboards .
: Look for English (or 英語 ) in the list. If it isn't visible, tap 言語を追加 (Add a language). Once you switch to English, the Fujitsu F-04J
Wake up the screen, unlock the phone (by swiping or entering a PIN).
Select it, and the phone should change its interface language. Note: This wipes all user data
app on another device to live-translate the screen while you navigate the menus. to try the MoreLocale 2 workaround?