Verizon Communications Inc., the second-largest US phone company, posted quarterly profit that beat estimates, bolstered by customers signing up for data plans. Earnings rose to 68 cents a share; analysts had estimated 65 cents. More than 61 percent of Verizon’s wireless subscribers own smartphones, meaning they typically use more data — and pay higher bills. Verizon Wireless added 677,000 monthly contract users. Wall Street was projecting 629,000.