Mobile Operating System Constraints

Design and capabilities of a Mobile OS (Operating System) is very different than a general

purpose OS running on desktop machines

Physically Constrained

Battery-powered device
Small screens of varying shapes, sizes, and resolutions
Memory
Storage space

Working in Uncertainty

Networks come and go
Other devices appear and disappear
OS need to provide robust methods for handling connections and coping with service interruptions
and ad hoc attempts to communicate