Generalized photo frames are opened from the back.
It is roughly divided into three types.
The first type, the screw is locked, the screw is unscrewed, and the photo is put in and tightened.
The second type, the snap-on type, is a principle with the phone case. When you open the photo, press it to lock it.
The third type, the part is rotating, and there is a small buckle that buckles the back, and the buckle is turned off, the backboard is removed, the photo is taken, and then the card is returned.