Starting from version 73.0.3683.90 of the Chrome browser for mobile devices, it is possible to open delegated boxes using the desktop mode within the browser.
Go to mail.g.unitn.it
Enter your University credentials
Log in to Gmail, click on the dots symbol and then on select desktop site.
Access to organizational mailboxes
You will receive the following error:
Request the "desktop site" again by clicking on dots
The organization box is now visible from the mobile device