*Result*: Mobile Cloud for Parallel and Distributed Green Computing.

*Mobile Computing and Mobile Cloud Computing are the areas where intensive research is observed. The \mo- bility" landscape (devices, technologies, apps, etc.) evolves so fast that deffinitions and taxonomies do not catch up with so dynamic changes and there is still an ambiguity in defini- tions and common understanding of basic ideas and models. This research focuses on Mobile Cloud understood as paral- lel and distributed system consisting of a collection of inter- connected (and virtualized) mobile devices dynamically provi- sioned and presented as one unified computing resource. This paper focuses on the mobile green computing cloud applied for parallel and distributed computations and consisting of outdated, abandoned or no longer needed smartphones being able to set up a powerful computing cluster. Besides showing the general idea and background, an actual computing clus- ter is constructed and its scalability and efficiency is checked versus the results obtained from the virtualized set of smart- phones. All the experiments are performed using a dedicated software framework constructed in order to leverage the no- longer-needed smartphones, creating a computing cloud. [ABSTRACT FROM AUTHOR]*