Yes, you can migrate your setup using a backup file.
On your old phone:
Update Smart Launcher to the latest version.
Create a backup from Smart Launcher settings.
Copy the backup to your new phone (Google Drive, local transfer, or USB cable).
On your new phone:
Install Smart Launcher from the Play Store.
Open Smart Launcher and restore/import the backup file.
Set Smart Launcher as default launcher.
Please note:
Home screen layout, icon arrangement, categories, and most Smart Launcher preferences are restored.
Some third-party widget data may need to be configured again, depending on each widget app.
App accounts and app-specific internal data are not managed by Smart Launcher backup.
Last updated 3 days ago