W-SIM
（RX420AL）
W-SIM (Willcom-SIM) is a
SIM card developed by
Willcom
Y!mobile is a Japanese mobile phone operator. Y!mobile is a brand used by SoftBank Corp., a subsidiary of Japanese telecommunications company SoftBank Group Corporation, that provides mobile telecommunications and ADSL services. The current CEO o ...
which, in addition to standard SIM functions, also has the core components of a cellular telephone (
PHS), such as the
radio
Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmit ...
receiver/
transmitter
In electronics and telecommunications, a radio transmitter or just transmitter is an electronic device which produces radio waves with an antenna (radio), antenna. The transmitter itself generates a radio frequency alternating current, which i ...
, built inside. It is currently used in some terminals (listed below), which do not have radio modules.
The W-SIM core module is an extended version of a SIM card, containing not only user data but also all the transmission technology needed for a mobile device to work.
A terminal device developer can build a customized terminal without the design and development of a radio module, and users can change to a different radio module W-SIM without changing the terminal itself.
Similar to traditional handsets made by WILLCOM, W-SIM terminals can be used in
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
, including global roaming with
Taiwan
Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...
and
Thailand
Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is bo ...
. For Mainland China, China Netcom had W-SIMs available, though its PHS network is due to be phased out this year. In addition, a GSM version called the CM-G100 had been developed for use in other countries.
WILLCOM branded terminals
*WS001IN / "TT"
*:Hand-set terminal by Net Index.
*WS002IN / "DD"
*:Data communication terminal by Net Index.
*WS003SH /
W-ZERO3
*:Hand-set terminal(
smartphone
A smartphone is a portable computer device that combines mobile telephone and computing functions into one unit. They are distinguished from feature phones by their stronger hardware capabilities and extensive mobile operating systems, whic ...
) by
Sharp
Sharp or SHARP may refer to:
Acronyms
* SHARP (helmet ratings) (Safety Helmet Assessment and Rating Programme), a British motorcycle helmet safety rating scheme
* Self Help Addiction Recovery Program, a charitable organisation founded in 19 ...
.
*WS004SH / W-ZERO3
*:Hand-set terminal(smartphone) by Sharp. Higher-spec version of WS003SH.
*WS005IN / nico.
*:Hand-set terminal by Net Index.
*WS007SH / W-ZERO3
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*:Hand-set terminal(smartphone) by Sharp. Stylish and slender version of W-ZERO3.
*WS008HA / WS008HA
*: ExpressCard data communication terminal by Hagiwara Sys-Com.
*WS009KE / 9(nine)
*:Hand-set terminal by KES.
Terminals branded by other than WILLCOM
*Kids Ke-tai {{Proper name, papipo!
*:Hand-set terminal by Bandai
is a Japanese multinational toy manufacturer and distributor headquartered in Taitō, Tokyo. Its international branches, Bandai Namco Toys & Collectables America and Bandai UK, are respectively headquartered in Irvine, California and Richmond ...
. The internal code is WS006.
External links
Willcom Inc.'s page
Engadget entry
DD "Data Driver"
Mobile technology
