Strategy Analytics predicts global smartphone shipments will maintain the downturn track and the volume will decline -5% YoY to -3% YoY in 2019 under different scenarios. However, we expect the market will come back starting from 2020 onwards. In 2020, we forecast global smartphone shipments will rebound to +2% to +3% YoY in different scenarios. Huawei’s smartphone shipment would experience big volatility under the US ban. Samsung, Xiaomi, OPPO, vivo, HMD (Nokia), Lenovo-Motorola, Google and some other smartphone vendors might be able to fill in the vacuum from the withdrew of Huawei in selected overseas markets, indicating by bumped smartphone shipment volumes in different regions. In contrast, Apple will face headwinds and maintain the downturn track in 2019. This report forecasts global smartphone shipments by region by quarter for 30 of the world's largest vendors from 2015 to 2020 under two scenarios. Global handset and feature phone shipment by vendor by quarter forecast scenario data are included in the report too. The report is a valuable tool for component makers, software developers, operators and other stakeholders to support their planning activities and closely track how US-China trade war impact global smartphone market in 2019 and beyond.