Unlikely. The USB protocol requires one master and one or more slaves (or whatever less charged nomenclature you prefer). In all likelihood UEFI will blindly assume to be the master while Android and iOS require negotiation to figure out who’s boss and what interface to present.
Although given UEFI it might be possible to patch that functionality in.
I mean I’m not sure I could actually boot off of my phone as a USB drive. That would be an interesting concept.
Unlikely. The USB protocol requires one master and one or more slaves (or whatever less charged nomenclature you prefer). In all likelihood UEFI will blindly assume to be the master while Android and iOS require negotiation to figure out who’s boss and what interface to present.
Although given UEFI it might be possible to patch that functionality in.