In this introduction, we argue for an expanded focus in mobile media and communication studies (MMCS) that accounts for the many types of mobile media that affect our lives. We begin by pointing out that mobile phone/smartphone research has dominated MMCS as a field. That focus makes sense, but it runs the risk of MMCS essentially turning into “smartphone studies,” which we argue would limit our impact. To make that case, we identify a few examples of the types of oft-ignored technologies that could add to the depth and breadth of MMCS research (e.g., RFID [radio frequency identification] tags, the Walkman, barcodes). We then summarize the articles in this special issue to categorize the breadth of this research, which ranges from analyses of mobile fans to autonomous cars to mobile infrastructure.