FIG. 1 is a perspective view of a first embodiment of an ornamental design for a communication device;

FIG. 2 is a front view of the first embodiment thereof;

FIG. 3 is a rear view of the first embodiment thereof;

FIG. 4 is a first side view of the first embodiment thereof;

FIG. 5 is a second side view of the first embodiment thereof;

FIG. 6 is a top view of the first embodiment thereof; and

FIG. 7 is a bottom view of the first embodiment thereof.

FIG. 8 is a perspective view of a second embodiment of an ornamental design for a communication device;

FIG. 9 is a front view of the second embodiment thereof;

FIG. 10 is a rear view of the second embodiment thereof;

FIG. 11 is a first side view of the second embodiment thereof;

FIG. 12 is a second side view of the second embodiment thereof;

FIG. 13 is a top view of the second embodiment thereof; and,

FIG. 14 is a bottom view of the second embodiment thereof.

The broken lines immediately adjacent the shaded areas represent the bounds of the embodiment in which they are shown while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the embodiment in which they are shown.