The ornamental design for mobile phone, as shown and described.
FIG. 1 is a front perspective view of a mobile phone;
FIG. 2 is a front view of the mobile phone of FIG. 1;
FIG. 3 is a rear view of the mobile phone of FIG. 1;
FIG. 4 is a left-side view of the mobile phone of FIG. 1;
FIG. 5 is a right-side view of the mobile phone of FIG. 1;
FIG. 6 is a top plan view of the mobile phone of FIG. 1;
FIG. 7 is a bottom plan view of the mobile phone of FIG. 1; and,
FIG. 8 is a front open view of the mobile phone of FIG. 1.
The broken lines shown in FIG. 8, which are immediately adjacent to the shaded areas and define unshaded regions, represent the bounds of the claimed design, while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.