How to enhance an iphone photo?

Iv got a photo that was taken by an iphone and there's a section of it that I'm wanting to see if i can get a clearer look at it. Is there any quick easy way that i could do it or would i have to download some program to do it for me? If so what would be the best for it?

You can try some apps. I like Snapseed. VSCO is also good, as is Photoshop Express. But there's only so much you can do with an iPhone photo.