Thanks for sharing! So, looking at the screenshot, here are my observations:

1. Dual frequency appears to be in use for GPS (1, 8, 27, and 30), Galileo (12), and QZSS (193), as they all have two entries in the list
2. The Mi 8 (with the current firmware revision) doesn’t appear to support the GnssStatus.getCarrierFrequencyHz() method to get the carrier frequency for each satellite. GPSTest will show the text classification of the carrier frequency (e.g. L1, L5) if it’s in a recognized range, and it will display the raw float value if it’s not in a recognized range. So blank values means that the API isn’t returning any data at all.

Could you share the exact firmware version and Android version number that you used for this screenshot?