I have a newly-bought iPhone 6s+. It successfully connects to my Sony MDR-ZX330BT bluetooth headphones. When I play music, the sound still comes out of the loudspeakers and not the headphones!
If I plug the Apple headphones into the socket, the sound comes to them and not the loudspeakers, so the audio switching must be working.
iPhone 6s Plus, iOS 9.2.1
Hi francis_jeffries,
Thanks for using the Apple Support Communities!
Form your question, I understand that audio plays out of the iPhone’s speaker when connected to your Bluetooth headphones. You may need to adjust the audio output as shown in the following article to hear the music from your Bluetooth headphones.
Play audio to a Bluetooth accessory
If you want to play audio to a Bluetooth accessory, you'll need to select the accessory.
You can do this by using the AirPlay option in Control Center.
While on a call you can tap audio and select the device that you want to use.
Set up and use third-party Bluetooth accessories - Apple Support
Best!
That works! Thanks a million.
My iPhone 6s sound does not come from connected bluetooth phones
