Verizon Wireless netted more than 1.4 million contract customers in the second quarter, according to comments made by CEO Lowell McAdam at an event on Thursday.

"This includes strong smartphone additions, company-record tablet additions and net additions for handsets," said Verizon, in a follow-up statement. McAdam said Verizon will also report "very good" retail postpaid churn for the three months ended 30 June.

This is a significant improvement on Q1, during which Verizon added 539,000 contract customers, fewer than the 625,000 netted by arch rival AT&T, and far fewer than challenger operator T-Mobile US, which added 1.3 million postpaid subscribers. Verizon ended the first quarter with 103.3 million retail mobile connections.

In addition, Verizon is expected to report stable margins at its mobile division, while fixed-line margins will show a slight improvement compared to the first quarter, McAdam said.

Verizon is due to publish its Q2 earnings on 22 July.

McAdam was speaking at the Allen & Co. conference in Idaho, an exclusive get-together for high-flying business leaders. Facebook CEO Mark Zuckerberg, Bill and Melinda Gates, Apple CEO Tim Cook and Alibaba chairman Jack Ma were also in attendance, according to multiple press reports.