hi,.
well , the range -180.0 +180.0 will be fixed in the next mobile beta release ( too busy now with the Steam launch , )
The term inclination also can be a bit misleading.. as it refers to the bearing of the spacecraft (.i.e. if you set long/lat coordinates at the pole ,all orbits would be with an inclination of +/-90 degrees, yet still you may want to select the orbital plane. "Inclination" parameter selects the planet base "bearing" of the spacecraft the position selected. Probbably we should enable both methods (bearing and/or orbital inclination ) in the next mobile release.