was quoted by Apple as a primary reason for developing the iPhone. In 2007, the number of phones that could play media was over 1 billion. Some companies have created music-centric sub-brands for mobile phones, for example the former Sony Ericsson's Walkman range or Nokia's XpressMusic range, which have extra emphasis on music playback and typically have features such as dedicated music buttons. Mobile phones with PMP functionalities such as video playback also started appearing in the 2000s. Other non-phone products such as the PlayStation Portable and PlayStation Vita have also been considered to be PMPs. Decline and contemporary DAPs and PMPs have declined in popularity after the late 2000s due to increasing worldwide adoption of smartphones that already come with PMP functionalities. Sales peaked in 2007 and market revenue (worth $21.6 billion) peaked in 2008, albeit notably mobile phones that could play music outsold DAPs by almost three to one as of 2007. In the EU, demand for MP3 players peaked in 2007 with 43.5 million devices sold totalling 3.8 billion euros. Both sales and revenue experienced a double-digit shrinkage for the first time in 2010. In India, sales of PMPs decreased for the first time in 2012, a few years after developed economies. The market was led by Apple with a share of about 50%, while Sony and Philips were the other major brands. Meanwhile, sales of the best selling product, the iPod, was eclipsed by the company's iPhone smartphone by 2011. DAPs continue to be made in lower volumes by manufacturers such as SanDisk, Sony, IRIVER, Philips, Apple, Cowon, and a range of Chinese manufacturers namely Aigo, Newsmy, PYLE and ONDA. They often have specific selling points in the smartphone era, such as portability (for small sized players) or for high quality sound suited for audiophiles. Typical features PMPs are capable of playing digital audio, images, and/or video. Usually, a colour liquid crystal display (LCD) or organic light-emitting diode (OLED) screen is used as a display for PMPs that have a screen. Various players include the ability to record video, usually with the aid of optional accessories or cables, and audio, with a built-in microphone or from a line out cable or FM tuner. Some players include readers for memory cards, which are advertised to equip players with extra storage or transferring media. In some players, features of a personal organiser are emulated, or support for video