Projects can cross company boundaries. Users need to be able to access all the apps shared to them from any tenant on all of their devices. For these scenarios, Power Apps lets users share apps with guest users from other tenants.
I’m happy to announce that now it is very easy for guest users to use shared apps on mobile devices.
Users can easily switch to a different directory, when using Power Apps on phones or tablets without logging out. Users see the list of directories they have access to on the profile page, and they can pick any directory to see apps shared with them as a guest user.
The directory switcher is available on iOS, Android and Windows. learn more.
Users signing in with a Microsoft Account (MSA) cannot switch directories from the user profile page. They must continue to use deeplink functionality, explained in this documentation.