T-Mobile US - number of customers/subscribers 2010-2020, by quarter

In the third quarter of 2020, T-Mobile provided a service for a total of 100.4 million customers. The company saw a large increase in subscriber numbers from the first quarter of 2020 to the second, driven by the merger of T-Mobile and Sprint in April 2020.

T-Mobile subscriber base

T-Mobile's subscriber base can be broken down into three customer categories: branded postpaid customers, branded prepaid customers, and wholesale customers. The majority of T-Mobile's subscribers are postpaid customers, making up more than half of the company’s customer base. About one third of customers are prepaid subscribers with the remaining 20 percent of customers being part of the wholesale segment.

Customer satisfaction

T-Mobile US currently has the highest customer satisfaction rate amongst wireless service providers in the United States according to the ACSI customer satisfaction index. This is also reflected in the fact that T-Mobile had the highest percentage of wireless customers who would not switch carriers in 2017 and 2018 - of the four major wireless services providers (T-Mobile US, AT&T, Sprint and Verizon). Additionally, T-Mobile's churn rate was at an all-time low in the second quarter of 2019; less than a percent of subscribers ended their T-Mobile subscription at that time.