Electronic device for controlling attributes of one-handed mode screen on basis of grip shape and method for controlling same

An electronic device comprising:

• a first housing;
• a second housing disposed to be movable with respect to the first housing;
• at least one grip sensor positioned on at least one edge of both the first housing and the second housing;
• a flexible display at least partially mounted on a surface of the second housing and adapted to be inserted into or withdrawn from the first housing through slide-in or slide-out movement of the second housing;
• and
• at least one processor operably connected to the first housing, the second housing, the at least one grip sensor, and the flexible display,
• memory storing instructions that, when executed by the at least one processor, cause the electronic device to:
• display, on the flexible display, a one-handed mode screen that is reduced in size according to a specified ratio corresponding to the full screen in a slide-in state,
• detect that the second housing is moved while the one-handed mode screen is displayed,
• detect a grip state of a user holding the electronic device, and
• move a display position of the one-handed mode screen based on the detected grip state of the user.