We currently have a set of Powerapps (model driven) in GCC High which is tied to our entra tenant. Part of the requirements we've been given is to be able to invite users in another cloud (GCC) through Entra B2B, and have them access our apps through their B2B identity.
This works fine via browser, however the client would like to use the iOS app for Powerapps - and this does not appear to support cross cloud.
We've tested this using our own GCC/Commercial tenant by creating a user then inviting it to our GCC High tenant, converting it to member, adding a powerapps license, and then giving it access to an app. When we log in this user on the mobile app, it only shows the home (commercial) tenant, and we're unable to switch to the GCC high tenant to view those apps.
The mobile app documentation doesn't speak to cross-cloud functionality or compatibility - is this supported?