AT&T beats profit estimates in Q1, sells 4.3 million iPhones

In total AT&T locked in $31.8 billion of revenue, of which it netted $3.6 billion in profit, or about $0.6 a share, beating Wall Street's consensus of $0.57 a share.
We continue to capitalize on our terrific momentum in mobile Internet. Smartphone and branded computing device sales continue to set a record pace, mobile data revenues were up nearly 20 percent, and we achieved this growth with expanding margins. These results add confidence in our outlook for the year.
The company sold the record for a first quarter 5.5 million smartphones, and clarified that about 30% of its smartphone customers on contract are using 4G-capable handsets. Tablets and tethering plans also broke the previous record in sales, contributing to the overall rosy picture, and churn rate was the lowest in seven quarters.
source: AT&T