“China Unicom signed a two-year agreement with Apple back in September of 2010 to offer its iPhone subscribers the handsets at reduced pricing if they agree to 24-month service contracts,” AppleInsider reports. “But high overhead costs for the devices themselves, coupled with a need for continued investment in infrastructure to support surging growth and data consumption by iPhone users, has China Unicom mulling a move to end contract bundles of the phone come next month.”

“A report by China-based tech.sina.com states that China Unicom ‘has not substantially profited from sales of iPhone 4’ and therefore may not re-sign its agreement with Apple to continue sales of the iPhone 4S or a new version of the phone widely expected to make its debut in September,” AppleInsider reports. “Though no further details were reported, it appears that the carrier would continue to carry the iPhone but only market it to customers who are willing to pay full retail price for the device.”

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