NFC near field communication technology is developed from the integration of contactless radio frequency identification (RFID) and internet technology. It integrates the functions of sensor card reader, sensor card and point-to-point on one chip, and can identify and exchange data with compatible devices in a short distance. The working frequency is 13.56MHz, but users who use this mobile payment scheme must change their dedicated mobile phones. This technology is widely used in Japan and South Korea. Their mobile phones can be used as airport boarding verification, building access keys, transportation cards, credit cards, payment cards and so on.
Huawei P30 is a smart phone owned by Huawei. 20 19 was first launched in Paris, France on March 26th, and was released in Shanghai on April 6th of the same year.
Huawei P30 adopts 6. 1 inch pearl screen, OLED panel, ultra-small bangs and ultra-narrow bezel in appearance. It is equipped with Kirin 980 processor, pre-installed with EMUI9. 1 system and equipped with 40-megapixel super-sensitive Leica three cameras. The maximum digital zoom of the camera is 30 times, which supports the function of "double-view video recording".