But the company has faced growing competitive pressure, most notably from Samsung of South Korea, which extended its lead over Apple during the second quarter. Samsung accounted for 32.6 percent of global smartphone shipments in that period, compared with 16.9 percent for Apple, according to IDC, a research firm. Most of Samsung's share of the smartphone market comes from products that run Google's Android operating system, which powered 68.1 percent of smartphones shipped worldwide in the second quarter, IDC estimated. Apple's share of the phone market, though, often gets a big boost over the holiday season and in the quarter immediately after the company introduces a new iPhone. Wall Street analysts expect that pattern to continue with the new iPhone. Apple is also fighting Samsung in courtrooms, contending that the company violated Apple patents.