Problem
F
Solution
All devices have an Idle screen, originally when the device is not doing anything, now as a launching point or when the user is not specifically asking anything of the device...
Must provide access to everything on the device
Variations
Drilldown menu - S60 as archetype, but anything really - May be icons or text.
Field of items (usually icons) larger than the viewport. General method is a horizontal scroll to get to other "screens" and one is considered the Idle screen.
May use both. Either way: a screen of icons which when opened reveal drilldown menus, or the primary access is an icon field but additional features or the complete list of applications can only be accessed via a long list or drilldown.
Settings may be considered as an application, or a variation???
Mention that Kiosks (e.g. 4 big icons to start from) are no different, just simplified due to new users and the relatively low number of things they can do.
A Lock Screen, which see, is not an Idle Screen.
Interaction Details
Scroll, click, etc.
Presentation Details
Position: scrollbar, or other scroll position indicators depending on what works best.
Antipatterns