The ornamental design for a portableelectronicdevice, as shown and described.
FIG. 1 is a front perspective view of a portable electronic device showing our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a rear perspective view thereof; and,
FIG. 9 is a front perspective view thereof, showing example environment.
The evenly dashed broken lines in the drawings depict portions of the portable electronic device. The dot-dot-dash broken lines showing the watch strap in FIG. 9 depict environmental structure. The broken lines form no part of the claimed design.