The ornamental design for a multi-purpose mobile phone support, as shown and described.
FIG. 1 is a front elevational view of a multi-purpose mobile phone support showing my new design;
FIG. 2 is a bottom perspective view seen from a bottom side thereof.
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines immediately adjacent to the claim as shown in the drawings represent the boundaries of the claimed design, while all other broken lines are directed to environment and are for illustrative purpose only; the broken lines form no part of the claimed design.