Nowadays almost no one does not know what Bluetooth is. Like any other technology, Bluetooth is actually under development, there are many ways to block the Bluetooth signal. What is bluetooth? Bluetooth is a low-power wireless connectivit…

Nowadays almost no one does not know what Bluetooth is. Like any other technology, Bluetooth is actually under development, there are many ways to block the Bluetooth signal. What is bluetooth? Bluetooth is a low-power wireless connectivit…