On Tuesday, AT&T posted its first quarter earnings results that showed it lost 215,000 branded postpaid phone subscribers in the first three months of the year. AT&T has taken up a strategy to target high-end customers but it seems that did not work out well for the wireless company. However, the company revealed a prominent increase in margins for wireless consumers.

The Dallas, Texas based company said three million customers have signed in the company's unlimited mobile data plan that is accessible exclusively to the DirecTV subscribers.

The wireless carrier ranks second in the U.S. It reported overall addition of 2.3 million in North America that's mainly attributed to its expansion in Mexico and to connected devices and prepaid phones. The company posted net addition of 712,000 branded postpaid and prepaid phones.

The overall revenues from wireless were somewhat down due to the latest trend of decrease in device sales faced by the entire industry.

Setting a record for the first quarter AT&T reported wireless service EBITDA margin of 49.5 percent. However the company did not say anything much related to its planned online video service. After last year's 49 billion acquisition of DirecTV, AT&T became the biggest pay-TV provider in the United Sates.