A recent ramp-up of orders for 4G smartphone chips will help MediaTek meet the mid-point to high-end of the company's sales guidance for the second quarter of 2015, according to market sources.

MediaTek saw its April revenues fall 25% sequentially. Nevertheless, MediaTek has recently received pull-in orders from China-based smartphone vendors for their new 4G models, which may boost the company's sales later in the second quarter, the sources indicated.

China's brand smartphone vendors including Huawei, Xiaomi, Meizu, Oppo and Vivo have stepped up their pace of orders for products targeted at the midrange to high-end market segments, the sources noted.

MediaTek has estimated that revenues for the second quarter of 2015 would register growth of up to 3% or up to 5% decrease on quarter. The company posted revenues of NT$47.54 billion (US$1.55 billion) in the first quarter, down 14.3% sequentially.

MediaTek expects to benefit from a rapid surge in demand for handsets from China and other emerging markets in the second half of 2015, company senior VP Chu Shang-tsu was quoted in previous reports.

Orders for handset chips from China and other emerging markets have been disappointing since 2015, due mainly to a lack of subsidies from local mobile operators and the US dollar appreciation.