The embodiment of the invention discloses a method and device for switching on-board business by using an external SIM card. The device includes: setting an external SIM card slot on TBox, and switching TBox to the network of the external SIM card when TBox detects that an effective external SIM card is inserted into the external SIM card slot. By setting up the external SIM card slot, it can meet the user's needs for diversification of on-board business.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请,说明书已公开。
【技术保护点】
PCT国内申请,权利要求书已公开。
【技术特征摘要】
【国外来华专利技术】PCT国内申请,...
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