let’s bump this thread, now that the d2d-transfer feature is implemented and released in version 14-4.0. The initial 2021 top post links a gitlab issue tracking / explaining what d2d is.
When /e/ gets to Android 14 (or backports to A13) and updates the 3 year old shipped Seedvault apk to or past that, users can have a more complete backup solution without any shell affinity or root privileges.
- Add experimental support for forcing “D2D” transfer backups
- Pretend to be a device-to-device transfer to allow backing up many apps which prevent backup