The iPhone has a built-in GPS receiver, so when it catches GPS signals, photos taken by iPhone have location information (geotag) in its EXIF data.
If you are using devices with iOS 4 or above, you can import geotag of photos, too.
Tap the name of the location below pictures to open the interactive map.
When you import photo from your camera roll or photo album, pictures with geotags have red mark.
You can To delete geotag from a picture within a note, tap x mark at the bottom of a picture.
Tap Globe icon at the information area of your note.
Interactive map opens to show all the location of your photos in that note.
Touch left or right arrow to see the next photo. To zoom a photo, touch a thumbnail.