The ornamental design for a tabletpcphonecase, as shown and described.
FIG. 1 is a first perspective view of a tablet PC phone case showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof.
FIG. 6 is a left side view thereof;
FIG. 7 is a right side view thereof; and,
FIG. 8 is a perspective view of another state of the tablet PC phone case thereof.
The broken lines shown in the drawings depict portions of the tablet PC phone case in which the design is embodied that form no part of the claimed design.