Linux thrives in embedded systems like smartphones because manufacturers control the entire environment—hardware, software, and user interface. https://www.quora.com/What-makes-Linux-based-devices-so-common-in-embedded-systems-like-smartphones-but-not-in-personal-computers/answer/Coherent-Market-Insights-1?ch=10&oid=1477743866123027&share=00131f5e&srid=uTm6RG&target_type=answer