Yes, you can crop photos and screen captured images on the iPhone.

Here’s how.

STEP ONE: To capture any screen image on the iPhone, press and hold the menu button down, then press the power button one time. This captures any screen image and saves the image to your photos library.

STEP TWO: To resize the image, use your fingers on the screen to zoom in on the image or photo to the exact size you want cropped. Now repeat step one and you have a cropped image that is saved to your photo library without losing your original.

Here’s a sample of a photo image taken on the iPhone, cropped using STEP ONE and then posted to this blog using only the iPhone.