I have just bought vmx100 bluetooth headset to mobiles. Suddenly it can not connect with my mobile. I have also tried to connect with four other mobiles but there is still no bluetooth connection. The mobiles can not detect any bluetooth device.
This is clear that the bluetooth device is faulty for while you have tried connecting to more that one devices, it was not recognized. If you have recently purchased it, please consider getting it back to the store and have it changed to have no difficulty anymore.