Fix for iPhone 5 Bluetooth audio loss / disconnect?

Question

I recently upgraded from an iPhone 4s to an iPhone 5.  I have a Motorola HX550 Bluetooth Headset which worked flawlessly with the iPhone 4s.  However, since upgrading to the iPhone 5, I frequently lose audio when in the middle of a call.  I am not certain whether it is a full disconnect or just an audio loss.  The person on the other end reports still being able to hear me, however, I suppose they could hear me speaking over another source even if bluetooth disconnected. The loss of audio is always preceded by a quick shrill noise, so I can easily tell when it happens.  All I have to do to fix the problem is to select Audio Source on the call screen, temporarily switch audio back to the iPhone, and then switch back to the headset, and then it starts working again.
Is is important to note that I am not the only one experiencing this issue:
This is a link to someone using the Motorola H19txt headset experiencing the same issue
https://forums.motorola.com/posts/94ac15ad7c
If you go to the Plantronics website and look at the "Ratings and Reviews" on the Voyager Legend you will see the same issue reported:
http://www.plantronics.com/us/product/voyager-legend (next paragraph is taken from the review since there is no direct link to the review.
Really nice Headset unless you own an Iphone 5. I own several Plantronics headsets and have always loved the quality/ performance. This headset seems not to be compatible with the new Iphone 5. In the middle of a conversation it will lose all incoming audio. This leaves you trying to switch audio sources really fast in order not to lose your phone call. Ive tried 3 legend headsets and they all do the same thing. Hopefully this gets fixed soon because the headset is really nice
Since this issue appears to affect multiple headsets from multiple vendors, I think it is fair to conclude that it is an issue with the iPhone5 bluetooth itself.
I am posting this as a new discussion as I don't see any other posts specific to this iPhone 5 Bluetooth issue.  I would have reported this as a problem to Apple, but don't seem to be able to find a way to do this on the web.  Hopefully they are already aware, but if not, maybe they will see i here.
If anyone else has experienced this issue, or has recommendations on how to prevent this from happening, I would appreciate your feedback / additions to this post.

Answer 1

I upgraded to an iPhone 5 last year, and since that time I have had the audio drop out problem at intermittent but bothersome rates. Interestingly, the audio drop occurs only with some Bluetooth headsets, and never with others. The headsets that have the problem are all over the head devices with strong noise suppression and very long battery life. The problem started with the Parrott XT250+, 20 hours talk time and fantastic noise suppression.
I then purchased the RK400 RoadKing, it has 30 hours talk time, and is a little lighter and less geeky looking.
Also superb, but it cuts out more often than the BlueParrot.
However, I have a Bose in ear Bluetooth which never loses audio.
These heavy duty Bluetooth headsets are popular with truckers. They indicate greater distance to/from the device, about double. 60 feet vs. 30 feet, as I recall.
There must be a Bluetooth standard they adhere to that causes the audio loss problem in the iPhone. Just clicking to iPhone and back to the bluetooth will clear it. I also sometimes have a funny noise that indicates the audio is out, but usually it's noticing the other person not speaking. It has caused some serious problems on important business calls. I bought these headsets, and the iPhone5, to handle these calls.
Apple's Genius bar folks do not appear to have heard of this problem. I was asked to demonstrate it, which i did, eventually I was given a brand new iPhone5 to address the problem. The results of that were interesting, the rate of drop about doubled on the new phone over the old.
I was told when the phone was replaced, and again when I went back, that I would probably have to erase everything on the iPhone, set it up as a new phone on iTunes on my computer, and reload whatever apps I wanted (Apple knows which you paid for). I went through this procedure. I didn't suspect it would work, but I tried it. It didn't work. And again, the frequency of the drop out varied. This leads me to believe it may be some odd memory or cache overload since different phone utilization of space seems to be an affecting variable.
That is, I had all but 8 gigs utilized on my 32 gig iPhone 5 when the problem began. When I had the phone replaced and backed up, I trimmed back some of the apps. When I wiped the phone's drive and reinstalled, I wouud up with more memory available, as I deleted 1000 photographs during the reinstall.
It's frustrating, but I have encountered such weird anomalies in the past. I am glad this forum exists to document the problem and hope Apple will notice, acquire a few of the problem headsets, and resolve the bug.