The gravitational force between two objects depends on their masses and the distance between them, as described by Newton's law of universal gravitation. A phone typically has a much greater mass than a feather. Therefore, the phone would exert a larger gravitational force than the feather.
However, if you are referring to the gravitational attraction between the phone and the feather, the force would technically be the same, since the gravitational force exerted by each object on the other is equal, according to Newton's third law of motion. Nonetheless, the effect of that force would be negligible due to the small mass of the feather compared to the phone. In practical terms, the phone's mass results in a stronger gravitational pull on the feather than vice versa.