FIG. 1 is a perspective front view of a back cover for a handset showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side view thereof; and,

FIG. 5 is a left side view thereof.

The broken line showing of the internal surfaces and the extending tabs is for illustrative purposes only and forms no part of the claimed design.