iPhone 6 Plus Bluetooth Volume Extremely Low

Nothing has worked for us (we have 3 iPhones all doing the same thing). Some of these "workarounds" fix the issue for a short duration, then the symptoms return.

The only thing we have noticed is that sometimes when we get a chat message while music is playing to a bluetooth device, the volume jumps up to normal volume again. Then later, it sadly diminishes to 50% again.

Very frustrating and this is with 3 different iPhones (5, 5c, and 6) using iOS 9 and 9.1 beta.

So it isn't related to a single model or a certain version of the iOS software.

I had this issue and just got through chatting with Apple support. I backed up the phone, restored the phone to factory settings, tested that the audio problem was fixed (it was), then restored the phone from the backup.

this is what Apple will have you do if you contact support; if it doesn't work, the next step is to replace your phone.

Thanks for the tip, now working as it should.

Same issue with my iPhone 6 Plus. It just started today while using bluetooth to listen to music on my Vizio Soundbar. This soundbar can really play loud and I normally have the music at about 1/3 to at most 1/2. Today, at full volume it is at around 25 percent of the normal volume. Switched the soundbar over to my TV and blew my ears out. Now I have some nasty ringing in my ears. Thanks Apple - I might need a doctor and some lawyers - just kidding but really why are you chancing this at all? This needs a fix for your customers safety.

Currently the issue is fixed for me by deleting the pairing and repaired and it is back to normal. Though my ears are ringing - did I thank you for that Apple?

@Apple Support

Is there any statement here from your side?

How can I/we get a real solution to adjust Siri with Bluetooth devices.

I am using an iPhone 6 with a Sena Bluetooth kiti on a Motorbike helmet.

This loud Siri beep that does not seem to be adjustable at all is a nightmare.

It is even dangerous. I nearly felt of my bike when I got that incredibly loud beep when accidentally touching the phone button. No kidding.

This may be a little late, but I had the same issue. Go to settings, scroll down to music. Check to see if Sound Check is enabled. If it is try turning it off. I did this and instantly my volume went full wide open.

Your email a genius!! Thank you so much for sharing!! Worked perfectly!

This issue with Bluetooth is a pain in the *** I’m really thinking of going sams

This worked for me. Only been having the problems on iPhone 6 + since iOS 11. Currently on 11.2 and this fixed the low volume issues.

Thank you for posting.