Bluetooth/Handset alternating

[rmwest]

Noticed while I am driving that the bluetooth will switch to the handset. The only way to switch back to the bluetooth is to manually do it from the handset. Is there a sensor in the phone that movement will make the switch?

 

[Rukbat]

No, but imagine a line from the headset to the phone. If it's going through your head, or through a major portion of your body, the phone is receiving a very weak signal and may lose it entirely from time to time. That will cause the handset to switch to itself.

If I wear a Motorola 850 in my left ear and the phone is on my right hip (in a holster on my belt), Bluetooth becomes iffy, But if I put the phone down and walk 20 feet away, with the headset and phone "seeing" each other there's no problem. The human body soaks up 2.4GHz signals like a sponge, and BT headset transmitters are VERY low powered.

Keep the headset and phone positioned so they can see each other without having to go through you.