Following a report from earlier this week indicating that Apple and China Mobile had broken off talks over the iPhone due to a disagreement over control of the App Store, a new report states that rival carrier China Unicom is now in talks to bring the handset to mainland China. “Yes, we are in talks with Apple Inc.,” a Unicom manager told China Business News. China Unicom plans to rollout a new WCDMA network on May 17, but it is unclear…