In recent years, T-Mobile has attempted to expand its customer base by "zero-rating" some popular apps like Netflix and Spotify. In other words, it has stopped those apps from counting against a user's data cap. The results can be seen on the infographic below which shows that T-Mobile's customers are consuming far more mobile data than other companies
App Data Usage Varies Hugely By Provider
Apps

Description
This chart shows average data used per day & usage time per person on U.S. cellular networks in 2016.









