Bluebocat, the screenshot is from iOS 7, but according to iOS 7 manual, there is no wrap text filter/editor in the standard iOS camera app. Perhaps this was made with a different app.
However, watch this: Re: How to wrap a text/image around a bottle/cylinder/object in specific Photoshop CS6? or How to Wrap and shape your text around any object or shape in Photoshop CS6 Tutorial - YouTube