A Smartphone App Makes it Easier for the Individual to Incorporate Strategies into their Daily Routines
A Smartphone is a portable device that combines the functions of a phone and a computer into one device. They differ from feature phones in that they have more powerful hardware and mobile operating systems, which allow for more software, internet (including web browsing over mobile broadband), and multimedia functionality (including music, video, cameras, and gaming), in addition to standard phone functions like voice calls and text messaging.
Smartphone typically contain a number of MOS integrated circuit (IC) chips, as well as a variety of sensors that can be used by pre-installed and third-party software (such as a magnetometer, proximity sensors, barometer, gyroscope, accelerometer, and more), and support wireless communications protocols (such as Bluetooth, Wi-Fi, or satellite navigation). NTT DoCoMo's i-mode platform, BlackBerry, Nokia's Symbian platform, and Windows Mobile started to gain traction in the market, with models featuring QWERTY keyboards or resistive touchscreen input and emphasising access to push email and wireless internet.
These Smartphone Market sensors have the potential to be used as portable feedback devices for a variety of behaviours and affective states that could be the subject of intervention. Following the popularity of the iPhone in the late 2000s, most smartphones have featured thin, slate-like form factors with large, capacitive screens that support multi-touch gestures rather than physical keyboards, and allow users to download or purchase additional applications from a centralised store, as well as use cloud storage and synchronisation, virtual assistants, and mobile payment services. PDAs, palm-sized PCs, and portable media players have all been largely replaced by smartphones.
Early Smartphone were primarily targeted at businesses, attempting to combine the functionality of standalone personal digital assistant (PDA) devices with cellular telephony support. However, they were limited by their bulky design, short battery life, slow analogue cellular networks, and the immaturity of wireless data services. The exponential scaling and miniaturisation of MOS transistors to sub-micron levels (Moore's law), the improved lithium-ion battery, faster digital mobile data networks (Edholm's law), and more mature software platforms eventually resolved these issues, allowing mobile device ecosystems to develop independently of data providers.
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