for me it happens occasionally, usually when i'm actively downloading something on my Mac on a 2.4Ghz Wi-Fi network while listening to music with my Beats X.

my iPhone 7 Plus doesn't seem to have any issue with Bluetooth audio, in fact it holds a signal better than my Mac. What carrier are you using and where?

Interference might occur if you're on 2600Mhz LTE network (band 7), becuase it's near the Bluetooth frequency (2.4Ghz). Try going to an area with a 1800Mhz LTE network (band 3).

(sorry if I'm not much help)

I just bought my i7+ last week and was getting stuttering audio to my cars HU also, not always but when it does happen it will get annoying.

Just sharing. I'm using ip7 and so far do not have any issues with connecting to both my cars head units, to bluetooth speakers, bluetooth Hifi,3 bluetooth headphones, to the macbookpro to transfer files etc. No such stuttering performance as described by members. ie its working as it should be. Got my unit from Maxis and spotify as my streaming app.

I have read in some other forum that, sometimes the iphone case does effect it. As for the quick fix of disabling LTE, well thats shouldn't be the permanent fix as the feature is not designed to be used that way. What I would do is that, by using iTunes, I would format the phone as a new phone and then test out the bluetooth feature. If it is still the same issues, a trip to the nearest sc would then be my next step.

I'm on Celcom. Quite hard to pin point the actual cause of it because it does not happen all the time for me

I'm on Celcom. Quite hard to pin point the actual cause of it because it does not happen all the time for me

Hmm, will check this out. Have no idea which BT generation my car's HU is running on