I claim the ornamental design for a car mobile phone holder, as shown and described.
FIG. 1 is a perspective view of a car mobile phone holder showing my new design;
FIG. 2 is a Top view of the car mobile phone holder as shown in FIG. 1;
FIG. 3 is a Bottom view of the car mobile phone holder as shown in FIG. 1;
FIG. 4 is a Left-side view of the car mobile phone holder as shown in FIG. 1;
FIG. 5 is a Right-side view of the car mobile phone holder as shown in FIG. 1;
FIG. 6 is a Front view of the car mobile phone holder as shown in FIG. 1;
FIG. 7 is a Back view of the car mobile phone holder as shown in FIG. 1; and,
FIG. 8 is a other perspective view of the car mobile phone holder as shown in FIG. 1.
The broken lines are only for environmental purposes and form no part of the claimed design. No particular colour scheme forms part of the claimed design.