Below is a statement from T-Mobile USA's CEO Robert Dotson:
"In the second quarter of 2010, customers embraced T-Mobile USA’s industry leading value which makes it simple and affordable for consumers to trade-up to next generation products and services."
Engadget notes that "thanks to a huge push into the smartphone space with devices like the HD2 and the myTouch 3G Slide -- enough of a push, in fact, so that it recorded slightly higher revenues in the second quarter of 2010 both year-over-year and against the first quarter ($5.36 billion in total)."
In a positive note, Android Central adds that Q3 will likely see better numbers:
"...these numbers don't reflect the launch of the Samsung Vibrant, which by all indications has sold quite well for T-Mobile. Plus, TMO is supposed to be announcing their first fully HSPA+ compliant device soon and a rumored dual-core Snapdragon phone might be coming, both of which should give them something to brag about."
Image from BoyGeniusReport