The study of mobile phones has boomed over the past ten years. Today it is doubtless one of the more vibrant research areas across the whole of media and communication studies. But this is also an undertheorised field, as a number of authors have pointed out. In this paper I heed the call for further theoretical work by addressing a blind spot in our field of vision, namely the elusive relationship between mobiles and sociocultural change. I suggest that we think about change not in the present continuous as we usually do (how things are chang-ing at present) but in the recent past, revisiting the empirical examples we have to date on actual changes that have already taken place, and then try and work out what part, if any, mobile phones played in those changes. I explore this approach through examples drawn from three strands of the bourgeoning mobile telephony literature, including some of my own primary research, namely political mobilisation, mobiles and markets, and everyday mobile sociality.