Finger grip for smart device

A finger grip for a smart device, comprising:

• a bonding sheet having a bonding surface attached to one side of an outer surface of the smart device, the bonding surface having a punched portion formed on one side of a top surface thereof, and a protection film for protecting the bonding surface;
• a guide sheet coupled to one side surface of the bonding sheet and having a guide slot formed on one side thereof and a coupling groove formed on the other side thereof;
• a variable sheet laminated on one side surface of the guide sheet and having a fusion portion formed correspondingly to the coupling groove and a slide pin formed protrudingly therefrom to pass through the guide slot;
• a fixing rivet coupled to the slide pin of the variable sheet to prevent the slide pin from escaping from the guide slot;
• and
• a printed film coupled to one side surface of the variable sheet,
• wherein the guide slot of the guide sheet comprises at least one or more protruding portions protruding inwardly therefrom to fix the slide pin in position thereto, while the slide pin is reciprocatedly moving therealong, and an auxiliary groove adapted to seat a head of the fixing rivet thereonto to prevent the head from protruding outwardly therefrom, the protruding portions having first protrusions formed on the outside of the guide slot with respect to a center of the guide sheet in such a manner as to be symmetrical to each other on both sides of the inner peripheral surface of the guide slot to allow the variable sheet to be kept in the state of coming into close contact with the guide sheet.