Motorola V635

I keep having problems with my phone saying that the "Bluetooth signal is weak; Use headset." I have owned a Tekkeon EzTalker, a Gennum NxZen 5500 Plus, and now a Plantronics Voyager 510. I have also borrowed a Moto HS850 from my mother. I keep having the same problem. Both the phone and the respective bluetooth headset have charged batteries. It's really getting on my nerves. The signal is usually not very strong at all when it is connected to the Bluetooth headset. If, for example, I hold the phone in my hand and extend my arm fully by my side, or if I put the phone in my front pocket, it gets a lot of static and will soon give me this error message. Today while I was eating supper, I was talking with the phone next to me on the ta...
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