Will it cost money if Bluetooth is always on in the mobile phone?

Bluetooth is a short-distance data transmission between local devices, not based on network transmission, and there is no charge. Bluetooth technology can effectively simplify the communication between PDA, notebook computer, mobile phone and other mobile communication terminal devices.

It can also successfully simplify the communication between these devices and the Internet, thus making the data transmission between these modern communication devices and the Internet faster and more efficient, and broadening the road for wireless communication.

It can realize wireless communication between mobile phones and hands-free devices, and wireless connection between computers and peripherals, such as mice, headphones, printers, etc. It was also the original intention of designing Bluetooth. At first, file transmission depended on Bluetooth.

Extended data:

The data transmission distance of Bluetooth depends on the transmission power of Bluetooth equipment, ranging from 1 m to 100 m, and the output power range is between 0001-0/w ... The transmission frequency it uses (that is, the carrier frequency we mentioned earlier) is equivalent to the electromagnetic frequency of microwave oven, which is 24 MHz. Any electronic equipment equipped with Bluetooth accessories can exchange data with each other in the nearby area.

The computer sends instructions to the printer to print files via Bluetooth. The mobile phone equipped with Bluetooth configuration can transmit the audio and video files stored in the mobile phone to the installed machine through Bluetooth. Similar data transmission can also be carried out between mobile phones with Bluetooth function.

Baidu Encyclopedia-Mobile Bluetooth