Samsung Galaxy core prime User Manual page 195

4. Tap More options
 A crop box appears on the picture.
5. To adjust the crop box size, touch and hold the edge of the box. When directional arrows appear,
drag your finger inward to or outward to resize the crop box.

To move the crop box to the part of the picture that you want to crop, drag the crop box to the
desired size and position.
Camera and Video
> Crop.
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