It may instead be using "cell tower triangulation" to measure your distance from the nearest cellular network towers, or even doing a lookup from a database that maps wifi hotspots to GPS coordinates.

它或许通过最近的蜂窝塔或者是Wifi热点来测量你所在的位置。

youdao

Bandwidth for 3g cellular may further be limited by cell tower bandwidth in some areas.

用于3g手机的带宽可能会进一步受到某些区域手机发射塔带宽的限制。

youdao

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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