My iPhone/iPad pro won’t use my bluetooth headset’s microphone.

Ok, thanks. Let's give the following a try then. You can start with your iPhone and the headset. The procedure would be nearly identical using the iPad or AirPods.

• Forget and Re-Pair this headset
  • Go to Settings > Bluetooth
  • Find your headset, tap the "i" icon next to it, and select Forget This Device.
  • Re-pair the headset by putting them into pairing mode and connecting again through Bluetooth settings.

• Ensure Proper Device Selection
  • When connected, tap the audio icon (usually a speaker or Bluetooth symbol) in the app you’re using.
  • Ensure your Bluetooth headset is selected for both input and output.

• Check App Permissions and Settings
  • Some apps may have their own audio input settings. Check within each app’s settings to see if you can manually select the Bluetooth microphone.

• Microphone Access
  • Go to Settings > Privacy > Microphone
  • Ensure the apps in question (Camera, TikTok, etc.) have microphone access enabled.

If none of the above helps, we need to go on to general iOS troubleshooting.

• Restart your iPhone

• Reset Network Settings:
  • Go to Settings > General > Reset > Reset Network Settings
  • This will reset your Wi-Fi and Bluetooth connections, so you’ll need to reconnect to your networks and devices afterward.

• Check for Firmware Updates:
  • Ensure your headset has the latest firmware updates.

Sorry, that none of that helped. My only other suggestion, at this point, is for you to contact Apple Support directly for further assistance with this matter. To do so, simply select the "Support" link on the lower left-hand side of this forum's web page.

It may help if you can provide us with the make & model of this Bluetooth headset.