Rakuten Link is a versatile communication app designed for iPhone users, enabling unlimited domestic calls and messaging functionalities for Rakuten Mobile subscribers. Users can connect with other Rakuten Link users as well as contact mobile networks and landline numbers in Japan and 66 other countries, with free calls to most Japanese numbers. The app also features group messaging options, allowing chat groups of up to 100 participants, where users can share media files and messages seamlessly.

In addition to its communication capabilities, Rakuten Link serves as a hub for Rakuten Group services, providing access to exclusive deals and offers. Users can manage their Rakuten Mobile accounts, check data usage and billing, and utilize the Wallet feature to handle Rakuten Points and payments conveniently. The app also includes a Super Point Screen for earning points effortlessly and keeps users updated with news and weather information. Overall, Rakuten Link enhances the communication experience while integrating various services under one platform.