A feature phone is a class of mobile phone; the term is typically used as a retronym to describe low-end mobile phones which are limited in capabilities in contrast to a modern smartphone. Feature phones typically provide voice calling and text messaging functionality, in addition to basic multimedia and internet capabilities, and other services offered by the user's wireless service provider.. They are also referred to as dumb phones, in contrast to smartphones. 
Feature phones are marketed as a lower-cost alternative to smartphones. Nowadays, feature phones are primarily specific to niche markets or have become merely a preference; for instance, in the United States some people favor feature phones over smartphones for the reason of simplicity.
The first phone released in 1984 was undoubtedly a feature phone. Even after introduction of smartphones in mid 1990s, feature phones enjoyed unchallenged popularity during 1990s and early 2000s. During early 2000s, best-selling feature phones not only occupied the mid-range pricing in a wireless provider's lineup, they made up the bulk of retail sales as smartphones were still considered a niche category for business use.
In 2007, Apple introduced the iPhone, followed by Google releasing Android in late 2008, and by 2009, the iPhone and Google Android shifted the smartphone focus from being a niche to mass market consumers. Feature phones, were and are primarily designed as communication devices. Companies that produced feature phones, such as Nokia and Motorola, were enjoying record sales of cell phones based more on fashion and brand, rather than technological innovation till mid 2000s. Consumer-oriented smartphones, such as the iPhone and those running Android, fundamentally changed the industry, with Steve Jobs proclaiming in 2007 that "the phone was not just a communication tool but a way of life". Though smartphones cost more to produce, they deliver higher profit margins than feature phones, thus device makers and wireless carriers have shifted towards smartphones. As a result, smartphones enjoyed the largest selection and advertising among carriers, which devoted less and less store space and marketing to feature phones.
In an effort to provide parity with smartphones, modern feature phones have also incorporated support for 3G connectivity, touchscreens, and access to popular social networking services. However, their functionality and support for third-party software are still relatively limited in comparison to smartphones.
In 2011, feature phones accounted for 70% of mobile phones sold worldwide. In 2013, smartphones outsold feature phones for the first time, accounting for 51.8% of mobile phone sales in the second quarter of that year.
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Feature phones are often kept in phone manufacturers' lineups for several reasons:
- They are lower priced than smartphone, because:
- Most patents on basic mobile phone technology have expired. Some expired patents make it possible to add more functions in their basic form that before were usually the purview of mid-range or high-end phones. Many standards-essential patents are required to have fair, reasonable, and non-discriminatory licensing (RAND/FRAND), which typically means that license payments for each device using a standards-essential technology must be low enough that it will not disincentivize adoption of a standard or cause legal conflict;
- Less complexity translates to simpler and cheaper assembly;
- Relative modularity: a feature phone can be designed around one or two primary functions: flashlight, radio, MicroSD card slot for additional storage, music player, camera, Internet browser, and wireless hotspot for more advanced devices. Many basic phones now include some of that functionality, rendering them as basic feature phones, whereas advanced feature phones include all of these and more.
- Low cost allows very flexible price ranges from low-end to mid-range. This allows serving low-end markets with basic and feature phones, as people in these market segments cannot afford smartphones;
- The feature phone lineup serves as a backup for critical situations – production delays, import/sales ban levied by competitors through courts or other like institutions.
From the point of view of markets and consumers, there are several situations for which basic and feature phones are beneficial:
- Power requirements are typically low, which translates to extended talk and standby times (approximately a month to next recharge). In some cases this makes it possible not to use grid power at all, by recharging through more autonomous means, such as cars and car batteries, solar photo-voltaic cells, or even notebook computers, if a phone supports USB charging.
- Anticipated loss, damage, or reasonably rough use: Basic and feature phones are often more durable, less complex, and more affordable than smartphones, and for these reasons are preferred as "travel phones", "party phones", "child's phones", and for field use scenarios. The devices' low cost means that loss of such an item is manageable, and usually serves as a disincentive for theft in mature markets. Basic and feature phones are preferred for travel purposes, as by their nature they can contain little to no sensitive information that border officials in some countries are very keen on getting their hands on for any reason.
- Liberal and mature markets are well-suited for specific functions: In countries where payphones have been discontinued, some operators offer prepaid phone plans with a SIM card and a basic mobile phone in one package for about the same amount a mid-tier calling card would have cost (€15 for the whole package in some areas). Travelers may often prefer this option, given expensive roaming fees, and that their own device's cellphone functionality might be limited or not work at all, if they have arrived from overseas territories with a device that was only made to work in an incompatible cell network, or if their calling plan does not include roaming.
- Companies and organizations may often want to provide their employees with a simple communications device, and purchase in bulk. This substantially reduces the individual price each phone.
- For various levels of security, companies may require a phone that is lacking a camera, and/or has little to no storage, or no communications functionality beyond basic talking;
Difference between smartphones and feature phones
Although a feature phone is a low-end device and a smartphone a high-end one, there is no standard way of distinguishing them. Smartphone and feature phone are not mutually exclusive categories. A complication in distinguishing between smartphones and feature phones is that over time the capabilities of new models of feature phones can increase to exceed those of phones that had been promoted as smartphones in the past. Because technology changes rapidly, what was a smartphone ten years ago may be considered only a feature phone today. For example, today's feature phones typically also serve as a personal digital assistant (PDA) and portable media player and have capabilities such as cameras, touchscreen, GPS navigation, Wi-Fi and mobile broadband internet access, and even mobile gaming.
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- Media related to Mobile phone at Wikimedia Commons