The Fujitsu F-04J is a ruggedized Android smartphone known for its durability and thermal imaging capabilities. As a carrier-locked device from NTT Docomo, the software ecosystem is heavily customized to adhere to Japanese telecommunications standards. For international users or residents in Japan preferring English or other languages, the lack of immediate language options presents a significant usability barrier.
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.
If you want, tell me which language you want to switch to (and whether the phone is currently in Japanese or another language) and I’ll give the exact menu taps in that language.
Related search suggestions sent.
To change the language on your Fujitsu F-04J DoCoMo (Arrows Raku-Raku Phone), you can navigate the system settings. Since these devices often default to Japanese, you can identify the correct menus by their icons or positions. Step-by-Step Language Change
Open Settings: From the home screen, find the gear icon labeled 設定 (Settings).
Locate Language & Input: Scroll down to find the menu option with a globe icon or labeled 言語と入力 (Language & Input). change language in fujitsu f04j docomo full
Select Language: Tap the first option at the top, usually labeled 言語 (Language). Add/Select English: If English is already listed, tap it.
If not, tap 言語を追加 (Add a language), select English, and then drag it to the top of the list to set it as the primary system language. Troubleshooting Tips
Visual Icons: If you cannot read the Japanese text, look for the Globe icon (Language) and the Information/Gear icon (System Settings) to guide you.
Limited Translation: Note that on some DoCoMo-specific models, changing the system language to English may only translate standard Android menus, while some proprietary DoCoMo apps or specialized "Raku-Raku" simplified menus might remain in Japanese.
Support: For further assistance, you can refer to the official NTT DOCOMO Support page, which lists English as one of their available support languages.
Does your phone's interface currently show a simplified "Raku-Raku" menu or the standard Android layout? Contact Us | Support | NTT DOCOMO The Fujitsu F-04J is a ruggedized Android smartphone
From DOCOMO mobile Phones Available languages: English, Portuguese, Chinese, and Spanish. NTTドコモ How to change the language on your Android device
Result: Approximately 85% of your phone will switch. This includes:
What remains Japanese/English:
This is the "fullest" you can get without rooting.
Now you will see two languages in your list: Japanese and English.
Some docomo F-04J units have the "Add language" button grayed out or removed by the carrier firmware. If you cannot find the "+" icon, use this Activity Launcher method. What remains Japanese/English:
This method bypasses the disabled settings menu and launches the hidden Android language panel directly.
A pop-up window will appear showing all available system languages. Select English (United States) . The system will change immediately.
Note: If you see an error message saying "This activity does not exist," your carrier has completely locked the language. Proceed to Part 5 (Rooting).
Use Settings search:
If you tried the steps above and your F-04J remains stuck in Japanese/English, check these issues:
| Problem | Solution |
| :--- | :--- |
| MoreLocale 2 says "Sorry, this locale is not supported on Android 7+" | You must use ADB to grant the app extra permissions. Run this command: adb shell pm grant jp.co.c_lis.ccl.morelocale android.permission.CHANGE_CONFIGURATION |
| The phone reboots and resets to Japanese | Docomo’s “Safe Mode” resets locales on reboot. Uninstall any "Device Administrator" apps (Find My Device) before applying the locale. |
| The Settings menu is half English, half Japanese | This is normal. The F-04J ROM is hybrid. You cannot fix this without rooting. |
| My language still isn't listed (e.g., Hindi, Filipino) | Google did not include these UI strings in Android 7.1 for non-Google devices. You need a custom ROM (which you can’t install). Use the keyboard fix only. |