Global smartphone shipments declined by -2% annually in Q1 2018. China kept posting the negative growth YoY while India and Russia grew its shipments YoY. Samsung became no.1 smartphone vendor in the majority SEVEN countries while Huawei defended no.1 position in its home China, and Xiaomi kept no.1 in India for two quarters in a row. Our extensive report tracks the world's 25 leading smartphone vendors' shipments and marketshare across 15 major countries worldwide from Q1 2012 to Q1 2018. The 15 countries tracked account for 7 in 10 of all global smartphone volumes. Countries covered include: Brazil, Canada, China, France, Germany, India, Italy, Japan, Mexico, Russia, South Africa, South Korea, Spain, UK, and the United States.