I am using Nokia 7210 Supernova and Nokia C3 can I connect both of them with same Bluetooth headset. Please suggest some Bluetooth Headset model which support this feature.
Just by the way Bluetooth was designed, you can have a peripheral PAIRED to multiple devices, but not CONNECTED to multiple.
You will only be able to use your headset with one phone at a time, but you can have it paired with both so that switching is just a matter of disabling Bluetooth on one phone and enabling it on the other.