The ornamental design for a sanitizing phonepad, as shown and described.
FIG. 1 is a perspective view of a sanitizing phone pad showing my new design;
FIG. 2 is an enlarged perspective view of one pad shown in FIG. 1 thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a side elevational view thereof with the adhesive layer partially peeled away;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is an enlarged front elevational view thereof.
The broken lines showing the telephone, receiver, bottom, and the cord are included for the purpose of illustrating environmental structure and form no part of the claimed design.