This study aims to update notions of how the practical elements of mobile communication (i.e., microcoordination and synchronization) alter the interconnectedness between places and mobilities. Based on ethnographic research on personal shoppers’ mobile purchasing practices between mainland China and Hong Kong (HK), this article argues that mobile communication, as a social practice, extends relational places in cross-border shopping, on the one hand, and transforms the performances of mobilities that are used to anchor the spatial identities of shoppers and localities for consumption, on the other. Shoppers’ mobile communication practices create variable interactions between mobilities and places, manifested as mobile communicating place and place-inscribed communicative mobilities. The consumer cultures of HK personal shopping are anchored by the multiplicity of places and shifting mobilities of people, data, and objects. Mobile communication in/of HK is a medium through which people from the mainland can consume the symbolic space and “localness” of HK, embodying the “spatial selves” of personal shoppers through digital expressions of mobilities. Shoppers produce place-inscribed communicative mobilities of themselves and of commodities in HK through differing synchronization and coordination patterns in two places (Tsim Sha Tsui and Sheung Shui), based on the fact that the former is an international and local-brand tourist center and the latter has risen as a new “parallel trading hub” for cross-border consumption.