The Phoenix D.II was a successful development of the likewise successful Phoenix D.I fighter. The D.I, though a competent aircraft design with good manoeuvrability, was still slower in speed and in climb than its contemporaries, such as the Hansa-Brandenburg D.I. As such, with the D.II came a lightened airframe to improve speed, a shortened fuselage, and redesigned wings and tailplane. Compared to the Phönix D.I, the D.II maintained the good manoeuvrability of its predecessor, but with an improved maximum speed and rate of climb, whilst mounting the same Heiro 200hp engine. A further development of the D.II, the D.IIa, was the same in all respects aside from a more powerful Herio 230hp engine. Introduced into service in March 1918, the Phönix D.II saw service with both the Austro-Hungarian Air Force and Navy. The Phönix D.II served until the end of the war, and alongside the Oeffag Albatros series of fighters, was amongst the best machines in Austro-Hungarian service.