On your Android device, select the content that you want to transfer and tap Next. Then — even if your Android indicates that the process is complete — leave both devices alone until the loading bar that appears on your iOS device finishes. The whole transfer can take a while, depending on how much content you're moving.

Here's what gets transferred: contacts, message history, camera photos and videos, web bookmarks, mail accounts, and calendars. If they're available on both Google Play and the App Store, some of your free apps will also transfer. After the transfer completes, you can download any free apps that were matched from the App Store.