All application data is stored inside the device. Therefore, when changing devices, it is necessary to backup the data on the old device and restore it on the new device. There are several ways to backup and restore data, so please refer to each page.
（PC required）
Backup & Restore – iTunes
Backup & Restore – iExplorer
(No PC required)
Backup & Restore – Dropbox
※ There is also a backup and restore method using iCloud, but we do not recommend this method because if the restore fails, there is no way to investigate and data may be lost. If you have difficulty migrating using the above methods, we recommend that you have both the old device and the new device in your possession (so that you can start over from the backup even if the restoration fails).