objective c - iOS - Playing sound in background when making a call -

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i have app in obj-c makes calls, play sound when user presses button start call. sound keep playing in background when call made? if so, how can achieve this?

thank in advanced

there absolutely no way play sound while carrier phone call in progress.

sometimes, playing audio interrupted audio different app. on iphone, example, incoming phone call interrupts current app’s audio duration of call. in multitasking environment, frequency of such audio interruptions can high.

it same behavior outgoing phone call. interrupts current app's audio (playing/recording) during duration of call.

you can read more here : ios human interface guide


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