This paper seeks to help clarify whether Mobile-Assisted Language Learning (MALL) is primarily an independent self-study activity or whether MALL classrooms exist. The research hypothesised that a large number of users frequently using specific MALL apps, at the same time and in the same city location, may indicate the existence of MALL classrooms. The research makes use of big data, in the form of Google Analytics data, collected from two EFL learning mobile apps. The data was gathered over a five month period, in 2015, from more than 6,000 cities worldwide. The research, in doing so, opens a sociological window into the world of MALL, providing a sample of actual user behaviour. The results strongly suggest that independent study is almost certainly the main form of MALL activity. However, the research also concludes that MALL classroom-driven activity may exist in some cities.