The most user-friendly and secure way to enable this is by embedding a SIM card and a communication module inside the car.

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It slots in where the smartphone connectivity kit rests inside the armrest and, when a suitable LTE SIM is inserted (this prototype model was rocking Verizon) will utilize the car's antenna to get you great signal.

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The BMW Car Hotspot LTE is essentially a purpose-built WiFi router that houses an LTE SIM (it also supports 3G and EDGE).

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