Member Avatar for Nickair

Hi,

I was wondering if anyone knew if there was a way to only use the microphone on a bluetooth device while connecting the iPhone to external speakers for audio playback during a phone call?

Thanks

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Short answer for : with the iPhone’s built‑in Phone app you cannot use only the Bluetooth headset microphone while sending the call audio to a different output on the phone. iOS treats an active hands‑free Bluetooth device as the single call audio route, so the mic and speaker are tied together for a call.

Why: phone calls use the Bluetooth Hands‑Free/Headset profile (two‑way, low‑latency). Music uses A2DP (one‑way, high quality). When a call is active the phone routes audio over HFP/HSP and disables A2DP for the same stream. You can manually switch the entire call between “Bluetooth”, “iPhone”, or “Speaker” from the in‑call Audio button, but you can’t split the microphone and speaker across two different devices.

Workarounds and practical options (expand on and ):

  • Use a dedicated conference speakerphone designed to handle room mic + room speaker — it’s the cleanest solution for multi‑person calls.
  • Bridge through a computer: pair the headset to the PC/Mac as the hands‑free device and route the phone audio into the PC (analog line‑in, Bluetooth BR/EDR bridging, or make the call via VoIP on the computer). This is clunky but can work for conference setups.
  • Use an external wired microphone into the iPhone and play audio through external speakers (wired) — avoids Bluetooth routing rules.
  • Check the Jabra Cruiser manual: some car speakerphones offer an aux output or separate audio modes; if the Cruiser provides an aux/audio output you might send audio to external speakers from it directly.

Quick test to verify: pair the Cruiser, place a call, tap the in‑call Audio button and toggle routes. If “Bluetooth” is selected the phone’s speaker is muted and the mic on the headset is used — you’ll see the limitation immediately.

Member Avatar for Master Rattley

Yes i do know.

Member Avatar for Nickair

Would you mind telling me?

Member Avatar for greatshop

Yeah,You can do it.
Speakers connected through the computer and mobile phone calls connected to the computer via Bluetooth.

Member Avatar for Nickair

Well i have a Jabra Cruiser bluetooth device that i want to use only the microphone and connect external speakers to the iphone at the same time for a conference call.

is this possible?

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