Mobile phones have multiple navigation chips and how they work

Correction, now mobile phones only have one navigation chip, which can simultaneously collect navigation signals from the United States’ GPS, China’s Beidou, and Russia’s GLONASS, etc., and it will automatically choose a signal with better and more stability to connect to. , as long as the communication protocol of the chip supports it. However, once a war breaks out between China and the United States or between China and Taiwan, the United States will shut down its GPS service to China, and a large number of China's navigation equipment will lose its function. Therefore, national defense military forces generally only use China's Beidou navigation.

In addition, the navigation chip in the mobile phone does not realize the navigation function alone. It usually integrates Bluetooth, wifi, FM and other functions, so it is collectively called the connectivity chip