Mobile operating system share of operating systems. However, variations occur in popularity by regions, while desktop-minority also applies on some days in regions such as United States and United Kingdom. Mobile operating system milestones mirror the development of mobile phones and smartphones: These operating systems often run atop baseband or other real time operating systems that handle hardware aspects of the phone. Android (based on the modified Linux kernel) is a mobile operating system developed by Google Inc. Besides having the largest installed base worldwide on smartphones, it is also the most popular operating system for general purpose computers (a category that includes
Rail transport in Great Britain weight multiplied by distance carried. 116.6 million tonnes of freight was lifted in the 2013–4 period, against 138 million tonnes in 1986–7, a decrease of 16%. However, a record 22.7 billion net tonne kilometres (14 billion net ton miles) of freight movement were recorded in 2013-4, against 16.6 billion (10.1 billion) in 1986–7, an increase of 38%. Coal makes up 36% of the total "net tonne kilometre", though its share is declining. Rail freight has increased its market share since privatisation (by net tonne kilometres) from 7.4% in 1998 to 11.1% in 2013. Recent growth is partly due to more