Sometime back I developed a mobile web app and posted an article how you could upload images using Apple’s wonderful devices such as iPod, iPhone and iPad. The reason for this was Mobile Safari browser that won’t let you upload images from your iPad/iPhone and iPad. File input field is disabled and you can’t really select anything to upload.
There’s no way you can enable Mobile Safari’s disabled file input field to upload files but I did find a way to upload images by using free Picup App with php script. Picup app must be installed on user device(iPhone/iPad) for the uploading script to work.