Why won’t my headphones connect to calls?
Only the Bluetooth device that supports SCO can record and play audio. If the Bluetooth device supports only A2DP, then it cannot record audio, which means it cannot be used to answer a phone call.
Why can I hear music but not voices through my headphones?
Why won’t my headphones work on calls iPhone?
Your iPhone may be in the Headphone Mode due to which you are facing iPhone sound not working issue during calls. Disable it or just stick to the Headphone Mode and refuse to go away then turn off and on your iPhone once.
Why my Bluetooth headset is not working for calls?
Next step is to navigate to Settings > Apps > All apps and enable System services. After that, locate the Bluetooth app and clear cache and data from it. Reboot your device once again and test Bluetooth again. You should also check for improvements with NFC disabled.