I claim the ornamental design for a communication device, as shown and described.
FIG. 1 is a front perspective view of a communication device showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The dash-dash broken lines in the figures show portions of the communication device. The dot-dash broken lines in FIG. 1 depict the boundary of the claimed design. The broken lines form no part of the claimed design.
The claimed surface surrounding the protrusions is flush with the contour of the band as seen from the side views.