FIG. 1 is a bottom plan view of the back cover for a handset;

FIG. 2 is a right side view thereof;

FIG. 3 is front view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a perspective front view thereof;

FIG. 7 is a bottom plan view of a second embodiment of the back cover for a handset of FIG. 1;

FIG. 8 is a left side view of thereof;

FIG. 9 is a front view thereof;

FIG. 10 is a right side view thereof;

FIG. 11 is a top plan view thereof; and,

FIG. 12 is a perspective front view thereof.

The broken line showings of the internal surfaces and the extending tabs in FIGS. 1-6 and the remainder of the handset in FIGS. 7-12 are for illustrative purposes only and forms no part of the claimed design.