What exactly is the Bluetooth function on a mobile phone? Please, everyone 3Q

Many mobile phones now have the slogan of Bluetooth support, but supporting Bluetooth does not mean that it has Bluetooth transmission capabilities. Some people may think that this is related to the Bluetooth version of the mobile phone. Some Bluetooth 1.1 and some are Bluetooth 1.2. In fact, the reason is not at this level, but more related to the standards of various Bluetooth projects. If your mobile phone uses more Bluetooth standard projects, the stronger the Bluetooth capability of your mobile phone. Introduction to the Bluetooth function of mobile phones. First, let’s talk about several major Bluetooth standards. 1. Address book. Almost all Bluetooth mobile phones can transfer to the OUTLOOK contacts of the computer, but very few of the OUTLOOK contacts of the computer can be transferred to the mobile phone. 2. Communication transmission In fact, this is the Internet function, which is supported by all Bluetooth mobile phones. The role of mobile phones can be considered to be equivalent to that of cats. The other is GPRS on WAP network. This is also a GPRS mobile phone that supports GPRS, a WAP mobile phone that supports WAP, and a CDMA mobile phone that supports CDMA. 3. The fax function may be rarely used, because there is a service fee for adding the fax function to a mobile phone. 4. There is nothing special about Bluetooth headsets, they are all supported. . Bluetooth headsets were born for Bluetooth phones. It's just that the price is a bit more expensive, so there's no way around it. 5. File transfer: Most mobile phones support file transfer, but most of them transfer files from mobile phones to other Bluetooth devices. Fewer support FTP file transfer from PDA and computer to mobile phones. 6. Serial port service This is hard to say. Many functions can be realized through the serial port, such as controlling the computer with a Bluetooth mobile phone, or connecting to the network, etc. This can actually be called an extension of existing functionality. Aren’t there many data cables with COMS ports~~~ 7. Mobile phone service There are really not many mobile phones that support this function. Perhaps Sony Ericsson models support it more. With this function, you can not only send text messages but also make calls using computers and PDAs. Very smooth, MP represents software PDA. Now let me compare my three Bluetooth mobile phones S65. The first one is X11, but it is Panasonic's earliest version of Bluetooth mobile phone. It supports the simplest Bluetooth for mutual file transfer and function. On the contrary, it is not as good as infrared, but Bluetooth transmission speed is very fast, and the protection is also very safe. Normally, it will not be opened unless it accepts files. In terms of communication function, it can be transmitted to smart Bluetooth mobile phones such as SX1, and the effect is very good. The second one is S55, which is Siemens' first A Bluetooth phone is relatively comprehensive in terms of functions. It has almost all the functions I mentioned above and can also support FTP files on the phone. That is, I can directly use a computer or PDA to control the file management in my phone and send all the files in my device. It is also very convenient to transfer files to the mobile phone. The third one is the S65, which supports stronger email capabilities but is similar to the Bluetooth of the S55 and does not support more functions. Through comparison, I found that although Bluetooth in mobile phones are still high-end models, I think mobile phone Bluetooth still plays a very important role in data transmission of mobile phones. SL75 abandons traditional infrared and supports Bluetooth, which shows that Bluetooth will become one of the main transmission methods for handheld wireless devices.