免持聽筒是指人們無需用手接起話筒，只需按下免持聽筒鍵即可接聽電話的狀態[1][2][3]。人們可以使用藍牙耳機接聽來自智能手機的電話[4]。此外還有車載免持聽筒電話，當智能手機來電時，駕駛員只需通過語音指令，無需接起手機就能接聽或撥打電話。司機可以通過車上的音響進行通話[5]。
參考文獻
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