A. 1. Use iCloud to sync your publications: Ensure you are logged into the same iCloud account on both devices and enable iCloud Drive for JW Library in Settings > [your name] > iCloud > iCloud Drive.
2. Manually download publications on the new device: Open JW Library on the new device and download the publications again from the library.
B. 3. Use iTunes to transfer files: Connect your old device to a computer, open iTunes, and back up the JW Library data. Then, connect your new device and restore the backup.