When using a smartphone _without_ Google account, you need to take care of backups yourself. For data like calendar, contacts or pictures this works nice with a nextcloud and is even built into the [e.foundation](https://e.foundation) operating system. However, when it comes to migrating all apps from one smartphone to another, then you either install them from scratch or perform a backup and restore.
When using a smartphone _without_ Google account, you need to take care of backups yourself. For data like calendar, contacts or pictures this works nice with a nextcloud and is even built into the [e.foundation](https://e.foundation) operating system. However, when it comes to migrating all apps from one smartphone to another, then you either install them from scratch or perform a backup and restore.