Apple’s main contract manufacturer, Foxconn Technology Group, has ramped up recruitment efforts ahead of the September launch of the iPhone 17, offering higher pay and bonuses for assembly line workers at its plants in Zhengzhou and Shenzhen. The world’s largest iPhone factory in Zhengzhou, in central Hunan province, has started increasing pay scales to lure temporary workers. A Tuesday post on WeChat by one of Foxconn’s recruiting agencies said workers who stayed at the factory for three months...