The ornamental design for a communicationdevice, as shown and described.
FIG. 1 is a front perspective view of our ornamental design for a communication device;
FIG. 2 is a rear perspective thereof;
FIG. 3 is front view thereof;
FIG. 4 is rear view thereof;
FIG. 5 is first side view thereof;
FIG. 6 is a second side view thereof;
FIG. 7 is top view thereof; and,
FIG. 8 is a bottom view thereof.
The broken lines shown in FIGS. 1-8, that are immediately adjacent to the shaded areas, and define unshaded regions is for the purpose of illustrating environment and forms no part of the claimed design.