Just how profitable is fully acquiring America’s largest mobile phone company ? Very.

In February of this year, Verizon purchased the remaining minority stake in Verizon Wireless previously held by Vodafone. Verizon has since raked in $4.2 billion in profits during the second quarter of 2014, compared to $2.2 billion over the same time period in 2013. Still, investors remained unmoved: Verizon’s stock price was essentially flat on the news.

One data point that likely contributed to the new, bigger company’s bottom line is Verizon Wireless’ ever-rising average revenue per account (ARPA); this rose 4.7 percent quarter-over-quarter, hitting just shy of $160 per month. As recently as January 2014, Verizon customers on average paid the most of any major carrier in the United States, at $148 per month.

It’s clear that Verizon is also making money hand-over-fist through data plans on tablets—in the second quarter alone, the company added 1.15 million tablets to its rolls and 304,000 new phones.

The firm said as much earlier this year in its annual report.

“We expect that our future service revenue growth will be substantially derived from an increase in the usage of innovative wireless smartphones, tablets and other Internet devices in addition to our pricing structure that will encourage customers to continue adding data-enabled devices onto existing accounts,” the company wrote in its 10-K filing with the Securities and Exchange Commission. “We expect that continued emphasis on increasing smartphone penetration, including continuing to migrate customers from basic phones to smartphones and from 3G devices to 4G LTE devices, will positively impact our revenue.”

In other words, even higher profits.