No iPhone launch would be complete with surprise delays and unexpected setbacks. According to Ming-Chi Kuo, an analyst at KGI Securities, the company that’s supposed to supply Apple with the iPhone 6S’s backlights is having issues with production and won’t be able to meet manufacturer as many backlights as needed to meet consumer demand. That’s why Apple apparently turned to one of the company’s competitors to make up for the shortage, but the setback will still cause Apple to have a limited supply of the iPhone 6S Plus at launch.