  LTE networks are commonplace nowadays; however, comparatively little is known
about where (and why) they are deployed, and the demand they serve. We shed
some light on these issues through large-scale, crowd-sourced measurement. Our
data, collected by users of the WeFi app, spans multiple operators and multiple
cities, allowing us to observe a wide variety of deployment patterns.
Surprisingly, we find that LTE is frequently used to improve the {\em coverage}
of network rather than the capacity thereof, and that no evidence shows that
video traffic be a primary driver for its deployment. Our insights suggest that
such factors as pre-existing networks and commercial policies have a deeper
impact on deployment decisions than purely technical considerations.
