Healthcare providers can improve outcomes and control costs by exploiting mobile technology, including patients' own phones, to deliver more care beyond the walls of hospitals and clinics. The virtualization of care enabled by mHealth technology can improve care of chronic conditions, redesign or streamline work flows, extend the reach of caregivers and facilities, and improve how information is shared across distance and time. Continuity of care requires mobile technology to boost patient engagement in an era when value-based care is replacing fee-for-service business models.