Premier U.S. mobile service provider Verizon Communications Inc. ( VZ ) reported second quarter 2013 earnings of 73 cents per share, in line with the Zacks Consensus Estimate. The results improved 14.1% from 64 cents a year ago. The improvement was buoyed by Verizon's investments for enhancing wireless operations, expanding global networks, improving FiOS services and tapping growth opportunities in broadband, video and cloud activities. The company also displayed top-class operating efficiency. Total revenue increased 4.3% year over year to $29.79 billion but failed to meet the Zacks Consensus Estimate of $29.83 billion. Segment Results Wireless revenues increased 7.5% year over year to $19.98 billion in the second quarter supported by robust smartphone penetration and customer additions. While Service and Equipment revenues improved 8.3% and 10.5%, respectively, Other revenues decreased 8.5%. During the quarter, Verizon added over 1.0 million retail subscribers, including 941,000 post-paid.