データお引っ越し is a free official data migration app by KDDI株式会社. With this app, you can easily transfer your data when changing devices. It supports data migration from Android to iPhone, as well as between different models and operating systems.

All you need to do is log in with your au ID, and you can start migrating your data hassle-free. The app offers the following main features:

• Transfer photos, images, videos, and contact data such as address book.
• Safely store your data temporarily in au's secure server and migrate it to your new device.
• Simple and intuitive interface for easy navigation.
• Supports data migration from Android to iOS devices and vice versa.

データお引っ越し is recommended for those who simply want to transfer their data without the complexity of multiple photo or backup apps. It ensures a safe and secure transfer of data from au smartphones to new devices. Whether you're running out of storage on your smartphone or worried about transferring data from your old device to a new one, this app has got you covered.

Please note that an au ID is required for using this app. Before using the app, make sure to review and agree to the terms of service and privacy policy.