The ornamental design for a mobile phonedock, as shown and described.
FIG. 1 is a rear view of the mobile phone dock, which embodies my design;
FIG. 2 is a left side view of the mobile phone dock;
FIG. 3 is a front view of the mobile phone dock;
FIG. 4 is a right side view of the mobile phone dock;
FIG. 5 is a top plan view of the mobile phone dock showing my new design in use. The broken line showing of the mobile phone in FIG. 5 is for illustrative purposes only and forms no part of the claimed design;
FIG. 6 is a top, front and right side perspective view of the mobile phone dock showing my new design in use. The broken line showing of the mobile phone in FIG. 6 is for illustrative purposes only and forms no part of the claimed design;
FIG. 7 is a top, front, and left side perspective view of the mobile phone dock; and,
FIG. 8 is an exploded top, front and right side perspective view of the mobile phone dock.