Are there viruses when using Bluetooth on mobile phones?

Bluetooth itself does not have viruses, but when you use Bluetooth to transfer things, files may be transferred to your mobile phone

1) Bluetooth is currently *** There are four versions V1.1/1.2/2.0/2.1.

2) Different versions can be further divided into Class A(1)/Class B(2) based on communication distance.

3) Differences between versions

1.1 is the earliest version, with a transmission rate of about 748~810kb/s. Because it is an early design, it is easily affected by interference from products with the same frequency. Communication quality.

1.2 also has a transmission rate of only 748~810kb/s, but adds (improved software) anti-interference frequency hopping function. (The technical theory is too in-depth and I won’t go into details!).

4) Communication distance version

a) Class A is used in high-power/long-distance Bluetooth products, but due to high cost and large power consumption, it is not suitable for personal communication Products (mobile phones/Bluetooth headsets/Bluetooth Dongle, etc.), so they are mostly used in some commercial special purposes, and the communication distance is about 80~100M.

b) Class B is currently the most popular standard. The communication distance is about 8~30M, depending on the design of the product. It is mostly used in mobile phones/Bluetooth headsets/Bluetooth Dongle personal communication products It consumes less power and is smaller in size, making it easier to carry.

5) Regardless of the 1.1/1.2 version of Bluetooth products, they can basically support the transmission requirements of Stereo sound effects, but they can only work in (simplex) mode, and the frequency response of the audio band is not enough, and Not the best Stereo transfer tool.