The E-junkie cart should work fine on iPhone or any other smartphone using a mobile version of a proper Web browser (e.g. Mobile Safari for iPhone, IE for Windows Mobile, Mobile Opera, etc.), and downloads should work in the standard manner where the buyer visits a thank-you/download page and downloads a copy of the file to their device, or they could download the file on their computer and then copy that file to a memory card or sync it to their device.
Once you set up your products in E-junkie Seller Admin, we provide you with ready-made HTML codes for your cart buttons, so you would simply copy the codes from us and paste them into the HTML source of your own Web site pages, wherever you want our buttons to appear among your own layout, text and images. If your product will issue a file download, you would simply upload that file to our server when adding the product in your E-junkie Seller Admin.
After the buyer finishes checkout and the payment processor confirms the buyer's payment was good and completed, we grant the buyer access to a thank-you page where we present their unique download link(s) automatically, and we also issue them a thank-you email with a link to reach the thank-you/download page in case they did not proceed to the download page after checkout. Their download link(s) expire after the number of attempts or hours (whichever comes first) that you specify in each product's settings.