Bluetooth is a wireless transmission technology. Devices with Bluetooth can send things to each other (no file size limit). Bluetooth is divided into three versions: 1.1, 1.2, and 2.0. The transmission speed of each version is different. , version 2.0 is the fastest, followed by 1.2, and 1.1 is the slowest. Nowadays, 2.0 is generally used. In addition, the distance of different Bluetooth wireless transmissions is different, generally 10 meters, but the farthest can reach 100 meters. If Your mobile phone has Bluetooth, and you like to play songs, pictures, etc. wirelessly. It is recommended to buy a Bluetooth adapter (the market price is about 40 yuan, it is the ordinary version 2.0, the transmission distance is 10 meters), install it on the computer, and download it for free through the computer. Things. MMS is also a way of wirelessly transmitting files (which can contain pictures, text, sounds, etc.) through GPRS. In theory, it can be sent to any place in the world, but this requires a fee, which is determined by the operator. .In addition, the size of MMS is determined by the size supported by the mobile phone itself, which generally does not exceed 100K.