Create data migration project
Please create a data migration app that imports data from a foreign backup, or backs up the foreign OS to phrase it via data modules. If Linux phones ever go mainstream, this needs to exist.
The app would for now use ADB to pull /sdcard and backup all apps and extract all APKs if the user chooses to use anbox, and restores some basic stuff like Call Log, Contacts, Calendar, basic settings, Wallpaper, and Clock data to a format compatible with pmOS, but if the user installs Anbox, the APK files will be installed there, and the .ab file will be restored to Anbox. Later, a Seedvault backup based transfer app should replace it, as ADB backup is deprecated and the backup tool supports backing up more apps via D2D transfer, and modern apps cannot backup via ADB. For iOS, an iTunes backup will be initiated and after completion, it will be restored to the pmOS system via similar scripts.
In the future, more methods of transfer, like a wireless iOS app, and a desktop app for restoring a variety of backup formats will be considered.