The ornamental design for an enclosure for mobiledevice, as shown and described.
FIG. 1 is a perspective view of an enclosure for mobile device showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines shown are included for the purpose of illustrating the unclaimed portions of the enclosure for mobile device and form no part of the claimed design.