Apple Inc. launched its iPhone 11 series in Japan on Friday amid increased competition from other major smartphone manufacturers, including those from China and South Korea.

Japan is one of the most important markets for Apple. Its iPhone models were the best-selling handsets in the country in fiscal 2018 with a 49.6 percent share, according to the MM Research Institute.

The figure is well above the iPhone's roughly 10 percent share of the global market in the second quarter of 2019, according to data provider Statista.