China-based handset vendor Oppo is expected to ship up to 50 million smartphones in 2015 compared to 25-30 million units shipped in the previous year. For total shipments in 2015, 35 million units will be sold domestically and the remaining 15 million shipped to overseas markets, according to sources at the handset supply chains in Taiwan and China.

Oppo uses Qualcomm's processors for production of high-end models, while utilizing chipsets from MediaTek for production of entry-level and mid-range handsets, the sources indicated. Meanwhile, Lite-On Technology serves as a main supplier of camera modules and power supply devices for Oppo.

Oppo's purchases of handset solutions from MediaTek are expected to increase significantly as the vendor has geared up its efforts to boost shipments of sub-CNY1,000 (US$160) models in domestic and overseas markets, indicated the sources.

Oppo currently has four production bases in China with combined output totaling 2.5 million units a month on average.

Having enjoyed a as high as 6.5% share in Indonesia handset market, Oppo is currently evaluating the possibility of setting up a handset plant there, the sources noted.