Strategy Analytics tracked global smartphone shipments (sell in) declined -7% YoY in January 2018 mainly due to overstocked inventory in channel, as well as weak performance in key markets, such as China and US etc. Moreover, sales (sell through) to end users posted a -12% annual decline. Inventory stabilized from last month because of weaker demand and seasonality factor. Samsung top both shipment and sales chart, followed by Apple, Huawei, Xiaomi, OPPO, and vivo. This report tracks global smartphone monthly shipments (sell in), sales (sell through) and inventory volumes / ratio by 28 of the world's largest vendors from January 2016 to January 2018. The report is a valuable tool for OEMs, component makers, software developers, operators and other stakeholders to track key OEMs inventory level and support their planning activities.