Because the calls originate on his Wi-Fi phone network with costs much lower than normal, Lissoos can undercut other phone card sellers on price.
由于通过他的无线网络电话网打电话的成本大大低于一般价格，利索斯能够以低于其他电话卡出售商的价格出售电话卡。
The most likely culprits are things that transmit a signal, like a cell phone or a computer operating in Wi-Fi mode, which emits an electronic pulse or wave.
最有可能的元凶是手机或带有无线上网功能的电脑一类进行信号传输的设备，这些设备都发送电子脉冲或者电子波。
The company says it is simply keeping a database of Wi-Fi hotspots and cell phone towers near the user's location.
该公司表示，它只是保存用户周边无线热点和手机运营商基站的数据。
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