Feature phones and basic mobile phones tend to use a proprietary, custom-designed software and user interface.
By contrast, smartphones generally use a mobile operating system that often shares common traits across devices.
Mobile phones offering only those capabilities are known as feature phones; mobile phones which offer greatly advanced computing capabilities are referred to as smartphones.
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.
A feature phone has additional functions over and above a basic mobile phone which is only capable of voice calling and text messaging.
In 1991, the second-generation (2G) digital cellular technology was launched in Finland by Radiolinja on the GSM standard.
This sparked competition in the sector as the new operators challenged the incumbent 1G network operators.
In 1917, Finnish inventor Eric Tigerstedt filed a patent for a "pocket-size folding telephone with a very thin carbon microphone".