Mobile Prototypes - lost functionality re viewport widths and home screen icons?

Coming back to Axure aftera year two - one of the reasons I loved it is that you could create really convincing ‘Smoke and mirrors’ demos for apps on mobiles really easily, 100% scale the viewport full width, creating home screen icons etc…
This functionality seems to have disappeared in V10 unless I’m missing something obvious? Surely a massive step backwards?
Is there a workaround anyone has found?