iPhone-Related Customer Churn an 'Area of Concern' for T-Mobile USA

As highlighted by AllThingsD,
T-Mobile USA acknowledged yesterday in discussion of its third quarter
earnings that the lack of an iPhone 4S offering for the carrier may have
an impact on customer retention, labeling churn rates as an "area of
concern".
“Earnings improved as we continued to focus on
making smartphones affordable to all Americans through our unlimited
Value plans,