Compass works only on devices with compass sensor (magnetometer).
First of all, you should enable GPS and Internet on your phone. Remember – in most cases it is impossible to receive GPS signal inside buildings. So if you want to get very accurate location – please go near windows or go even outside.
In current app version location should be found quite immediately. So if you stuck with ‘no location’ message please make ensure that you got enabled all required features/permissions.
If app found your location, you must select desired satellite. To do this you must find icon with magnification glass and tap it. On the list you will find all satellites with elevation angle above zero degrees. Remember: satellite name doesn’t affect the calculation of angles. Important thing is satellite position.
The azimuth, elevation and skew angle is calculated for your location and chosen satellite. Under calculated values there is a compass with graphical representation of azimuth angle. The azimuth angle is calculated with magnetic inclination. Remember – every time you use compass – you should calibrate it. Green line represents your phone azimuth. So if on compass green and red indicators are on each other – front of the phone should show you direction to the satellite. If the compass value is correct – phone azimuth value will go green.