Google Pixel 4’s official spec sheet shows that the new machine does not support dual-frequency GPS function when it goes on the market. However, Google said it will support dual-band GPS functionality for Pixel 4 through software upgrades in the near future.
What is dual-frequency GPS? Simply put, the phone can receive GPS satellite broadcast signals in the L5 band. It also supports receiving traditional L1 band signals to more accurately determine your position. Empirically, the error of single-frequency positioning is 5 meters, the error of dual-frequency GPS is 30cm. It also reduces the interference of skyscrapers on GPS signals.
Although the Pixel 4 is hardware-enabled for dual-band GPS, Google doesn’t seem to be ready for the feature, just promised to support it soon.