I have a Mate 20. After update to EMUI V9.1 I can see L1/L5. However the altitude “alt” and “alt (MSL)” are always reported equal. I logged messages from NMEA and I can see that message $GPGGA has field “Height of geoid” set to zero. Is this a bug in Huawei’s software?
I work at a road construction company. Our survey engineers use high accuracy GNSS receivers with 1 cm accuracy, but for our other field workers I’m exploring the possibility to use a regular smart phone with best possible accuracy. I’m currently evaluating Xiaomi MI 9 with it’s dual frequency GNSS receiver…
Have confirmed that Mate 20 Pro is showing dual frequencies in GPSTest after 9.1 update: https://forum.xda-developers.com/mate-20-pro/help/mate-20-pro-20-dual-gps-tested-gps-t3856053/page4