Telecomms

Apple Inc.’s debut of the newest iPhone on all four top U.S. carriers at the same time will test the loyalty of customers at AT&T Inc. and Verizon Wireless.
Sprint Nextel Corp., whose investors backed a takeover by SoftBank Corp. yesterday after an eight-month fight, is now preparing to use the firepower of its soon- to-be parent company to target Verizon Wireless and AT&T Inc.
Nokia Oyj, the Finnish mobile-phone maker seeking a comeback, reported its smallest quarterly revenue in 13 years as handset demand waned, missing analysts’ estimates and sending its stock down as much as 13%.
Verizon Communications Inc., the second-largest U.S. phone company, reported an increase in profitability at its wireless unit that topped analyst estimates as sales of smartphones boosted customers’ bills.