Does Huawei p50 support dual card dual standby? Huawei p50 supports dual card dual standby, it supports dual card 4g, and card 1 and card 2 can be switched to the default mobile data card at will.
Huawei P50 does not support 5G. According to the analysis of Securities Times, what Huawei lacks is a "5G RF filter". In a mobile phone, to realize the 5G function, it needs three systems: baseband, RF and antenna. Baseband (sometimes called "modem") allows mobile phones to process (modulate) raw electrical signals containing data and information. Radio frequency will convert these signals into radio waves that can travel in the air. Then the antenna is responsible for transmitting and capturing these radios.
At present, the RF filter industry is monopolized by the United States, Japan and South Korea. There are 1 1 companies that dominate the filter market, including Broadcom, Qorvo, ABRACON, OSCE, Skyworks Solutions, API Technologies, Akoustis Technologies and Bird from the United States. Murata Co., Ltd. and TDK； from Japan; And RTx technology from Korea. SAW and BAW filters, including mobile phones and satellite positioning equipment, are basically produced by these enterprises.
What about domestic enterprises? In April 2020, the first self-developed high-frequency BAW filter in China was officially released. Although there are many domestic manufacturers of SAW filters, our technology still lags behind the advanced level of foreign countries because it started several decades later than foreign countries.
Taking Huawei p50 as an example, this paper applies it to Harmony OS2.0 system.