Many folks use their smartphones to capture photos of their foods or products they want to show off. Your iPhone camera may be decent but you are still going to need proper lighting and setting to capture great photos. These 3 portable photo studios are more than adequate for iPhotography:
Foldio: a mini photo studio for your iPhone and other smart devices. This table top photo studio has built-in lights and backdrops. It is great for product photos to use in Etsy and eBay listings.
Lightcase: a pop up studio for your iPhone. It is portable and made of material that diffuse light to improve your photos. You get 3 backgrounds with it.
ZumBot: designed to help you take better macro shots with your iPhone. It turns your device into an electronic magnifier you can use to digitize documents and films. ZumBot has 3 lenses to get you started. It is steady and supports light filters.
Your smartphone may not replace a high-end DSLR, but it is still capable of capturing decent photos. The above photo studios help you capture better photos with your phone.