The Bluetooth has always worked fine and paired up well with my car without any noticeable audio issues. However, last week I got a pair of cheaper Arctic brand (yes the same Arctic that makes case fans. LoL) Bluetooth headphones to have something wire free for when I go running (they get great reviews on Amazon). They are specifically these here:
When they came in they paired up with my Nexus just fine and I had no audio cutting out issues over Wifi or LTE. Also worked great on phonecalls. The range is excellent as I can have my phone laying on my Kitchen table and be around 25 - 30 ft away across the house with a wall in between and audio doesn't cut out.
So fast forward to when I attempted to use them on a run. I have a Spi Belt to carry the phone when I run (it's basically a thin flexible waist belt with a stretchy thin neoprene pocket on the back to hold your phone snugly against your back (no bouncing) while your run. The first day I ran, I had the Nexus in the Spi Belt and the bluetooth audio signal cut in and out like crazy. The phone is in a thin neoprene pocket with only the bottom of my Nike Dri fit shirt covering it........and it's less than 3 feet from the Bluetooth headphones on my head. Needless to say I was very fruststrated.
I did some searching online and ran across some info on a possible bluetooth issue with the latest Qualcomm radio module update as well as people reporting Bluetooth issues in KitKat. One of the suggestions was disable the 5GHZ band for Wifi. I did this and when I ran the next day, with the same setup the audio only cut out a few times (instead of like 100 times the first day).
So my question is. Does anybody here know if there is a known Bluetooth issue? Is there a fix or workaround? I'm thinking it's related to the Bluetooth on the Nexus because the improvement was immense when disabling the 5GHZ on Wifi.
This weekend I am going to try turning the Wifi off completely, as well as testing my same running gear setup with my sister's iPhone 5S to prove the issue is with the Android/Qualcomm Bluetooth. It's a VERY annoying issue.
If I hold the Nexus in my hand while running, the audio is flawless. However, I think it's interference related somehow since making the adjustment to the Wifi Frequency really helped the issue, even when the Nexus was in the Spi Belt strapped to my back and under my shirt.
Any additional information or suggestion is extremely appreciated.