Even if you're calling someone next door, the cellular signal must first travel to the local cell tower before being routed to your neighbor's phone.

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For example, if your home service goes out, it can start using a cellular signal instantly -- if you've slotted in a sim card, that is.

ENGADGET

Modems still lose connections in midstream, and nobody can get a cellular phone signal to the outside world.

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It transmits the signal via the cellular telephone network to a computer where it can be interpreted.

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The network monitors utility rate schedules and automatically transmits a signal to the vehicle through embedded cellular connectivity to start charging at the lowest cost.

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This event is a significant signal that the basis of competition has shifted markedly from cellular technology to computing technology to content.

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Some doctors recommend keeping cellular phones six to 12 inches away from the ICD because of the possibility the phone signal could interfere with the pacemaker.

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