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The sales of accelerometers have been growing at a constant rate since 2006. Jérémie Bouchaud, director and principal analyst of Microelectromechanical Systems (MEMS) for iSuppli, predicted that one-third of cell phones shipped worldwide will use an accelerometer, up from one-eleventh in 2008 to one-fifth in 2009. It is also expected that revenues from sales of MEMS in phones will rise to $1.6 billion in 2013.

So exactly what functions do the devices contribute to the cell phone industry? With the capability to detect and measure motion, accelerometers are essential to many applications and features of the popular smartphone nowadays. For example, it enables an iPhone to switch its screen from portrait to landscape view when it is tilted on its side. Apart from screen orientation, the sensors are also widely used in other type of handsets in motion-sensitive games, shake modes for control of music playback, context awareness and pedometers.

Nokia’s N95 is the first handset equipped with an accelerometer. Its success provokes the growing use of accelerometers, which becomes an essential component on those current top-selling devices such as Apple’s iPhone, Palm’s Pre and BlackBerry Storm.

Since January 1, 2009, of the several hundred handsets already launched, 18.3% of the models integrated an accelerometer. Among the top cell phone makers, Sony Ericsson enjoyed the highest penetration of accelerometers, with 18 out of 19 new phone models introduced this year, followed by Nokia with 38% of its handsets platforms equipped with motion-sensing accelerometers since January. Samsung and LG are also offering new phones with 3-axis accelerometers.

With its ever-increasing popularity, the integration of accelerometers will no longer be considered as an exclusive feature. The devices will certainly play a significant role in developing more new and innovative features and applications on the future cell phone models.