SEOUL, South Korea (AP) — Samsung Electronics Co. said Monday it is delaying sales of its first Tizen-powered smartphone in the latest setback to the company's ambition to create a mobile platform to rival Google's Android or Apple's iOS. The delay is a blow to Samsung's push to reduce reliance on Google's Android operating system, which powers Samsung's Galaxy smartphones and tablets. The prototype device received positive reviews for its fast speed for surfing the Internet and loading apps.