Accurate information from all walks of life has made the just concluded Apple’s October conference less mysterious. Although the iPhone 12 series of four models has brought new appearance design, 5g, and stronger camera performance, the absence of high refresh rate and the ancestral “bangs” screen inevitably make this generation of iPhone less attractive. < / P > < p > as in previous years, apple didn’t list all the highlights and new features of the iPhone 12 series at the press conference, and a lot of information was hidden in the specifications and various introduction documents on the official website. Through these hidden details, perhaps we can learn more about this annual flagship. < / P > < p > although each generation brings more new features and functions, it is accompanied by more and more bulky fuselages. Among them, the thickness of the iPhone XR and 11 is 8.3mm, which is the thickest iPhone in recent years. The last iPhone whose thickness exceeded 8mm was the iPhone 5C (8.97mm) released in 2013. < / P > < p > also worth mentioning is the iPhone 12 Mini. This model is not only thin, but also light, with a weight of only 133 grams. In the current market, it is very difficult to control such a weight. No wonder Apple calls it the lightest, thinnest and smallest 5g mobile phone in the world. At the beginning of the launch, Apple introduced 5g, the biggest highlight of the iPhone 12 series, and even brought the CEO of Verizon as its platform. < / P > < p > the iPhone 12 models sold worldwide will include two versions, one supporting both sub-6ghz and mmwave millimeter wave, and the other only supporting sub-6ghz 5g band. The former will be mainly sold in the United States, while the versions sold in China and other regions around the world will only support sub-6ghz 5g band. < / P > < p > mmwave millimeter wave technology can achieve ultra fast speed in a short distance, making it more suitable for coverage in dense urban areas. Apple said that through cooperation with operators, the maximum network speed can reach 3.5gbps under ideal conditions. In contrast, sub-6ghz 5g is generally slower than mmwave, but has the advantage of longer signal transmission and better service for suburban and rural areas. In most countries and regions that provide 5g, sub-6ghz network is more common. < / P > < p > to achieve more stable 5g communication performance, Apple has also redesigned a custom 5g antenna and radio component for the iPhone 12. < / P > < p > interestingly, in the middle box on the side of the power button of the US iPhone 12 series, there is an antenna interface specially opened to realize mmwave millimeter wave technology, which is also the most obvious sign that the American version of iPhone 12 is different from other regional versions. < / P > < p > both iPhone 12 pro and iPhone 12 Pro Max are equipped with a new tri camera system, including an ultra wide angle camera with a wide field of view, a long focus camera, and a new wide-angle camera. The last two lenses have stronger configuration on the iPhone 12 Pro max. for example, the focal length of the long focus lens is narrower, which is upgraded from 52mm to 65mm, and the maximum shooting capacity is 2.5 Multiple optical zoom, longer focal length image works. < / P > < p > in addition, the wide-angle lens of iPhone 12 Pro Max has also been greatly upgraded. Not only has the aperture increased to f / 1.6, but also the sensor size has also increased by 47%, and the pixel size has been increased to 1.7 μ m, which makes this wide-angle lens perform better in dark light environment, with a maximum shooting performance upgrade of 87%. < / P > < p > I don’t know if it’s because of the configuration change. The positions of the three cameras of iPhone 12 pro and iPhone 12 Pro Max have been adjusted. The far right is the super wide angle lens. The left side of the iPhone 12 Pro lens module is wide angle + long focus from top to bottom, while the lens position of iPhone 12 Pro Max is just the opposite, with the left side of long focus + wide angle from top to bottom. < / P > < p > starting with the iPad air 4, apple watch series 6, and iPhone 12 series, apple began to gradually eliminate the charger and other accessories in the package, and the only accessory might be the data cable. < / P > < p > but the iPhone 12 series phones sold in France are still equipped with lightning earpods wired headphones. The reason is that in 2010, France enacted a law that said: “mobile phones cannot be sold without accessories to limit the head from being affected by radio radiation during communication.” < / P > < p > some time ago, whether iPhone supports “Beidou navigation” has become a hot topic of discussion. After that, apple responded that the iPhone 11 model had used Beidou system as a part of its location data system, but it did not give any more explanation, and the corresponding official support documents could not be found on the official website. < / P > < p > and the iPhone 12 series has officially added Beidou to the specifications of positioning function. Apple (China) official website shows that in terms of positioning function, the iPhone 12 series has built-in GPS, GLONASS, Galileo, QZSS and Beidou, and supports digital compass, WLAN, cellular network and ibeacon micro positioning functions. < p > < p > previously, the successful launch of the last networking satellite of beidou-3 global navigation satellite system means the completion of China’s first major space infrastructure providing global public services, which also makes China one of the four major entities capable of providing global navigation and positioning services, and the other three core suppliers are GPS of the United States System, GLONASS system of Russia and Galileo system of EU. The iPhone 12 keynote has been recorded in Apple park