My HTC M9 wont connect to my blue tooth to answer calls

[AC Question]

Message is : JTC one M9 could not establush the phone call

 

[B. Diddy]

Welcome to Android Central! Can it make the call if you're note connected to a Bluetooth device? Is this a Bluetooth headset or a car system? Go to Settings>Bluetooth, tap the gear icon next to the device, and make sure Phone Audio is checked on.