The ornamental design for a case for mobilephone, as shown and described.
FIG. 1 is a front perspective view of a case for mobile phone showing our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a rear perspective view thereof; and,
FIG. 9 is an enlarged view of the encircled portion as illustrated in FIG. 1.
The dot-dot-dash broken lines in FIGS. 1 and 9, encircling a portion of the claimed design that is illustrated in an enlarged view, form no part of the claimed design.