Updated from April 24.
T-Mobile USA (TMUS) 's first-quarter earnings call after the market close on Monday was a mix of financial commentary and trash talking, with CEO John Legere jeering Verizon's (VZ) recent report and predicting failure for Comcast's (CMCSA) wireless joint venture.
The T-Mobile CEO touted the gain of 1.1 million net subscribers -- which marked the fourth straight year that that carrier had added at least one million customers per subscriber -- and largely derided a "stupid, arrogant industry" that had been slow to change and predicted the formation of a national cable and wireless network.
As the government quiet period limiting talks between participants in a recent spectrum auction ends Thursday, Legere suggested big changes afoot, which he said could include Alphabet's (GOOGL) Google or Amazon (AMZN) joining the mix of telecoms and cable service providers to some degree.
The telecom said it earned $698 million, or 80 cents per share, in the first quarter, compared with net income of $479 million, or 56 cents a share, for the first three months of 2016. But revenue of $9.55 billion came in just under forecasts of $9.62 billion.
Shares of T-Mobile slumped 1.4% in after-hours trading Monday but were up 2.8% to $66.49 in Tuesday morning trading.
Legere contrasted T-Mobile's performance with the "disaster of a quarter" that Verizon posted last week, with a loss of 289,000 post-paid phones during the first quarter.
"That's really got to be embarrassing after all of that mic dropping," Legere said, referring to an ad announcing Verizon's unlimited mobile plan in mid-February.
Since going unlimited, the T-Mobile CEO said, Verizon's network had gotten "noticeably slower" making it "slower than AT&T (T) ."