At the moment it is only possible to view screens with viewport 360px with the Google Nexus 5X device in prototyping presentation mode. This device is quite old and has only 640px viewport height.
It would be nice to add custom devices or to have state of the art android devices with viewport 360px width to choose, for example Samsung Galaxy S21 (viewport 360 x 800px)
It’s crucial to have some fancy looking devices for management presentation or usability tests with customer. (Not everyone is designing for iPhones… )