Is it possible to make android and or IOS phones microphone and transmit to Bluetooth -

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i want "convert" phone microphone, when talk phone, , phone connect speaker want hear sound on speaker. in other words convert phone microphone.

my question if passible? or possible 1 of platforms?

or not.

yes possible use phone microphone transmit speech, on android can if dig tutorials, , not sure ios depends on it's permissions


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