Nokia began in the late 19th century making paper and rubber products, eventually expanding into cable, electronics, and telecommunications. It launched the first international cellular network in 1981 and helped establish the GSM standard in 1987. Nokia dominated the mobile phone market in the late 1990s and early 2000s. However, it failed to keep up with smartphone innovation from Apple and Google. After several leadership and strategy changes, Nokia's market share declined dramatically and it sold its mobile phone business to Microsoft in 2013.