
Tools to turn your devices into Japanese-only mode
There is no single universal tool that fully converts devices to Japanese-only mode, but several methods and tools exist to achieve this effect in different contexts:
- Change Device Language and Region to Japanese:
- Most smartphones, tablets, and computers allow setting the system language and region to Japanese in the device settings. This changes menus, system messages, and compatible app languages to Japanese.
- Create Japanese Region Accounts:
- For app stores (Google Play, Apple App Store), creating a Japanese region account unlocks access to Japan-only apps and localized content.
- This is common for accessing Japanese apps unavailable outside Japan.
- Use Japanese Keyboards/Input Methods:
- Installing a Japanese keyboard/input method on devices (such as Gboard or iWnn IME) allows typing in Japanese.
- Switching input methods lets users type kana, kanji, and romaji as needed.
- Specialized Tools for Specific Devices:
- For Google Pixel phones, it is possible to change the device’s model number in the devinfo file to a Japanese variant to enable Japan-specific features like Osaifu Keitai (mobile wallet).
- In cameras or other devices, firmware tweaks may unlock Japanese or multilingual menus.
- Set Japanese as App Language Individually:
- Some apps allow setting their language individually to Japanese regardless of device language.
- Android supports per-app language settings starting Android 13.
Examples of popular Japan-only or Japan-preferred apps include Rakuten Bank, Suica, PayPay, and local GPS/navigation apps like カーナビ.
If full immersion is desired, change all system settings (language, region) to Japanese, use a Japanese keyboard, create a Japanese app store account, and selectively install Japanese-exclusive apps. This approach effectively turns devices into Japanese-only mode for user experience.
If desired, guidance can be provided for specific device types (Android, iPhone, Windows, etc.) on how to apply these settings and tools. Would you like a walkthrough for a particular device?