China Mobile has signed a long-awaited deal with Apple to offer iPhones on its network, a person familiar with the situation said, an arrangement that would give the U.S. technology giant a big boost in the world’s largest mobile market. The rollout of iPhones on the world’s largest mobile carrier by users, with over 700 million subscribers, is expected to start later this month, around the time of a Dec. 18 China Mobile conference in Guangzhou, according to two people familiar with the carrier’s plans. China Mobile is one of the world’s last major carriers that doesn’t offer the iPhone. At the Dec. 18 event, China Mobile plans to unveil a brand for its fourth-generation, or 4G, network. China Mobile executives have said they would only begin to sell the iPhone after introducing 4G services.