Altitude correction for reference geoid missing (might be device problem)
I'm just trying out PhoneTrack on a OnePlus 3T with LineageOS and I noticed that the raw GPS altitude is used instead of the geoid-corrected one, resulting in a much too large altitude value (I'm at about +5 mNHN and the data point shows something around +50 m). Possibly my phone is to blame for not converting GPS altitude to WGS84 altitude, or the app is taking the wrong value from the location API.