发明名称 METHOD AND APPARATUS FOR SWITCHING VIRTUAL SIM SERVICE CONTRACTS WHEN ROAMING
摘要 A system and method store provisioning data supporting a plurality of service providers in a VSIM internal memory unit of a mobile device. The mobile device may automatically enable provisioning data supporting one of the plurality of service providers stored in the VSIM internal memory unit to conduct a wireless communication so as to avoid roaming fees.
申请公布号 US2010311418(A1) 申请公布日期 2010.12.09
申请号 US20090480490 申请日期 2009.06.08
申请人 发明人 SHI GUANGMING;TANGIRALA VENKAT;SIU TA-YAN;DURAND JULIAN;SPRIGG STEPHEN A.
分类号 H04W4/00;H04B1/38 主分类号 H04W4/00
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