かんたん設定 is a utility tool developed by Yahoo Japan Corp. It allows users to easily register for My Y! Mobile and set up their Yahoo! JAPAN ID's initial settings as well as configure settings for various Yahoo! JAPAN applications. This tool is specifically designed for customers who subscribe to Y! Mobile services.

For customers who have contracted with SoftBank, the tool operates as a web shortcut that displays the My SoftBank site in a web browser. By using かんたん設定, users can conveniently perform all the necessary setup tasks without any hassle.

Before using the app, users are advised to check the Yahoo! JAPAN Terms of Service, which includes guidelines and rules on software usage. The app is provided by Yahoo! JAPAN and ensures the privacy of user data through its privacy policy.

Please note that the app is only available for Android devices and is free to use.