The new, original and ornamental design for a portion of holder for electronic device, as shown in the drawings and described herein.
FIG. 1 is a left rear perspective view of a design for a portion of a holder for an electronic device according to an embodiment of the present invention;
FIG. 2 is a right rear perspective view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left front perspective view thereof;
FIG. 5 is a front elevational view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a right side elevational view thereof;
FIG. 8 is a right-side cross-sectional view thereof, taken along section lines 8-8 of FIG. 3;
FIG. 9 is a top end elevational view thereof;
FIG. 10 is a bottom end elevational view thereof;
FIG. 11 is a cross-sectional view facing the bottom end thereof, taken along section lines 11-11 of FIG. 3; and,
FIG. 12 is a rear elevational view of the design for a portion of a holder for an electronic device according to an embodiment with different dimensions as compared to the embodiment illustrated with respect to FIGS. 1-11. Each of the front, side, and end views can be the same as or similar to those of FIGS. 1-11, again, adjusted for the specific dimensions and/or electronic device operational portion(s) for use therewith. For example, none of the broken-line oval/circular portions may be present, a different number of the broken-line oval/circular portions may be present, or the broken-line oval/circular portions may be arranged at different portions about the end(s) and/or side(s) and/or back.