If the phone is currently in Japanese, these are the common labels you’ll see:
Now you will see two languages in your list: Japanese and English.
You have followed the steps, but the phone remains in Japanese. Here is why:
| Issue | Likely Cause | Solution |
| :--- | :--- | :--- |
| "Add language" button is missing | docomo corporate firmware lock | Use Activity Launcher (Part 3) |
| English is not in the list | Bloatware removed language files | The phone cannot support English. Return to seller. |
| Phone reverts to Japanese after reboot | Some docomo apps reload the locale | Disable "docomo Palette UI" or "UI Manager" via ADB (pm disable-user --user 0 com.nttdocomo.palette) |
| Certain apps are still Japanese | Apps have their own language setting | Go into each app's settings (top right gear icon) and change individually |
Notes and assumptions
Quick overview
Detailed steps
If language option is missing or locked by carrier
Advanced — using ADB (for experienced users)
Troubleshooting
When to seek help
If you want, I can:
To change the language on a Fujitsu F-04J (docomo) from Japanese to English (or another supported language), follow these steps: change language in fujitsu f04j docomo full
Note: Docomo-branded Fujitsu phones (especially older ones like the F-04J, released in 2017) often have a limited language selection (Japanese only, possibly English on some models). If you don’t see English in the menu, the system UI may not support it without modifications.
The Fujitsu F-04J , also known as the Raku-Raku Smartphone Me
, is a Japanese Android device designed for seniors. Because it features a highly customized "Raku-Raku" interface, finding the language settings can be difficult if the phone is currently set to Japanese. Step-by-Step Language Configuration To change the system language on your Fujitsu F-04J DoCoMo , follow these steps:
Open Settings: On the home screen, locate and tap the Settings icon (represented by a gear or labeled 設定 in Japanese).
Locate Language & Input: Scroll down through the list until you find Language & Input (言語とキーボード). On some versions, this may be under a broader "System" or "General" menu.
Select Language: Tap on the Language (言語) option at the top of the next screen. Add/Select English: If English (英語) is already in the list, select it. If the phone is currently in Japanese, these
If it is not listed, tap Add a language (言語を追加) and select English from the alphabetical list.
Set as Primary: Once English is added, drag it to the top of the list to make it the default display language for the entire device. Visual Cues for Japanese Menus
If you cannot read the Japanese text, look for these universal icons: Settings: A gear/cogwheel icon.
Language & Input: An icon resembling a globe or a keyboard key with a character on it.
Confirm/Save: Usually the right-side button or the first option in a pop-up prompt. Important Considerations
Model-Specific Variations: While the F-04J follows standard Android paths, the "Raku-Raku" interface might hide some settings behind an "Other" (その他) menu or simplify the layout. You have followed the steps, but the phone
Docomo Support: NTT DoCoMo offers official support for their devices in multiple languages, including English and Chinese, if you
Abstract
The Fujitsu F-04J is a Japan-exclusive smartphone released under the NTT docomo network, originally running Android 7.1 Nougat. Unlike international Android devices, Japanese carrier phones often have limited language options, typically Japanese and English. This paper outlines the step‑by‑step process to change the display language on the F‑04J and discusses possible workarounds when the desired language is not available.