The 16th ACM International Conference on Mobile Systems, Applications, and Services. ACM MobiSys 2018 seeks to present innovative and significant research on the design, implementation, usage, and evaluation of mobile computing and wireless systems, applications, and services. This conference builds on the success of the previous fifteen MobiSys conferences. It is sponsored by ACM SIGMOBILE. We propose to host ACM MobiSys 2018 in Munich, Germany, with Technische Universität München (TUM) as the local hosting institution.