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W-SIM (Willcom-SIM) is a SIM card developed by Willcom which, in addition to standard SIM functions, also has the core components of a cellular telephone (PHS), such as the radio receiver/transmitter, 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, including global roaming with Taiwan and Thailand. 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) by Sharp. *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 *: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. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「W-SIM」の詳細全文を読む スポンサード リンク
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