Well, it is a long story. I bought the Mogul and immediately fell in love with it. I then bought the Plantronics 655 and it seemed to work well for about a week (or until March 10, 200
. When Sprint released firmware 3.35 with GPS and EVDO - Rev A, I obviously upgraded. It was right after that when people began to complain they could not hear me on my bluetooth - lots of static, etc. I started searching for others having the same issue and that is when I discovered no2Chem's custom ROM's and kitchen. After flashing no2Chem's 5060 ROM my Bluetooth worked better, but still not with the clarity I wanted. Also, Bluetooth started to randomly turn itself off and the volume would not stay where I set it. I missed several calls one day because the phone actually turned all sounds off! After several custom cooked ROM's and even reflashing the official Sprint ROM, I noticed (just by chance) that the volume issue did not show up until I used my Bluetooth headset. I could use Bluetooth to sync with my PC just fine. I haven't used my headset for 2 days now and have had no issues. Using 5067 as cooked in no2chem's Kitchen.
It is time to try a different brand of Bluetooth headset, as the Mogul just does not like Plantronics (at least the 6xx series).