The ornamental design for a portableelectronicdevice, as shown and described.
FIG. 1 is a perspective view of a portable electronic device showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is another perspective view of the portable electronic device in use;
FIG. 9 is an enlarged view of the area X in FIG. 5; and,
FIG. 10 is an enlarged view of the area XI of FIG. 8.
The broken line showing of a string in FIGS. 8 and 10 is included for the purpose of illustrating environment and forms no part of the claimed design. The broken lines showings of a linear feature through the opening in FIGS. 5 and 9 are included for the purpose of illustrating environment and forms no part of the claimed design.