there are many videos circulating on social media that Bluetooth conducts electricity through our mobile devices. Still, I know that Bluetooth uses radio waves from 2.402 GHz to 2.480 GHz. can anyone give a proper scientific explanation about this?
No, Bluetooth signals do not attract lightning or electricity. Lightning is a natural phenomenon that is caused by the buildup of electrical charges in the atmosphere due to atmospheric conditions such as storms. Bluetooth signals are radio waves that are transmitted through the air using electromagnetic radiation, which is a completely different type of energy. Radio waves do not have the ability to attract or generate electricity, so they cannot cause lightning or other electrical phenomena.
There were some old considerations regarding possibility of attraction of lighting strike by transmitting antenna, however the RF electric field created even by kW level transmitters does not extend far and is way below electric fields that appears during the thunderstorm preceding the lighting strike. Bluetooth transceivers having power order tens of mW are certainly out of question.
As Nikolay Pavlov says, low power bluetooth will not attract lightning.
Air breaks down and has lightning when the electric field is about 2 kilovolts per mm or above.
The electric field from signals around 2.4 GHz can reach this level, and could trigger lightning if they did, but it would need to be 100 Gigawatts per square metre, or about a kilowatt from your phone. Bluetooth is deliberately way below this level (nearly a million times less), mainly so it doesn't make you hot, and so the batteries last. 100 Gigawatts per square metre would cook you, fast.
The power density in a wave in air is about ([electric field in volts per metre]squared)/377. The power needed is the power density multiplied by the area, which near a phone is only 1/10000 square metres or less.