The ornamental design for the portable phone, as shown and described.
FIG. 1 is a perspective view of a portable phone;
FIG. 2 is a front view of the portable phone of FIG. 1;
FIG. 3 is a rear view of the portable phone of FIG. 1;
FIG. 4 is a left-side view of the portable phone of FIG. 1;
FIG. 5 is a right-side view of the portable phone of FIG. 1;
FIG. 6 is a top plan view of the portable phone of FIG. 1;
FIG. 7 is a bottom plan view of the portable phone of FIG. 1;
FIG. 8 is an open front view thereof showing a rotated portion and displaying a supplementary keypad of FIG. 1;
FIG. 9 is an open side view thereof showing a rotated portion and displaying a supplementary keypad of FIG. 1;
FIG. 10 is a side view thereof showing the supplementary keypad slid downwards, with the hinge part of the bottom main part rotated to the rear to allow the phone of FIG. 1 to serve as a holder; and,
FIG. 11 is a front view thereof showing supplementary keypad serving as a holder of FIG. 1.