A common occurrence in almost all full-scale natural disasters is the rapid destruction of the telecommunication infrastructure as the inevitable unfolds, which tends to halt the necessary communications between the humanitarian operators and the people in need. In such scenarios, the deployment of wireless networks would provide fast and temporary remedies, however these networks normally do not provide services to the end-users and ordinary people, instead they provide connectivity between groups of end-users administered by a local service provider. From a range of services provided to the end-users by the humanitarian operators, healthcare is by far the top priority. This is considered through the utilization of smartphones in a Mobile Health (mHealth) perspective, which is an emerging concept for monitoring and tracking end-user health conditions. This article considers an mHealth system used in a tsunami-stricken disaster scenario, including a discussion on the most recent advances of Device to Device (D2D) and LTE-Direct technologies.The future of wireless and cellular disaster recovery systems is expected to rely heavily on direct Device-to-Device (D to D) communication, eliminating the need of the functioning telecommunication infrastructure. Reference [11] has identified the following 7 key technology goals for future public disaster recovery systems: LTE-based communication systems, resource sharing mechanisms, hierarchical dispatch-chain, unified voice/data/video communication channels, integrated security, privacy, and reliability, scalability and system reconfiguration, and real-time low-latency communication responses. These goals will be coupled with Wireless Body Area Network (WBAN)