Last week, on a whim, I ordered a couple of lenses for my iphone. Yes I have a fancy camera, but I always have my iphone with me and take more photos with that than anything. The iPhone 6 has an amazing camera to begin with, but it's fun to have a couple of other options for taking better photos.
I found this 3-in-1 lens on Amazon for $15. The price was right and the reviews were decent. Sold. There's a fisheye, macro, and wide angle lens in the package.
Here's the photo I took with my normal iPhone camera:
Here's the wide angle lens:
And the fisheye:
Here is a closeup that I took with the regular iPhone camera. This was as close as I could get and still get something in focus:
And here's the photo I took with the macro lens:
I haven't used these lenses much more than to take these photos, but I think I will definitely be using them regularly. I'm especially fond of the wide angle.
The only potential problem for people is if you have an iPhone and there's a hefty case on it, you might have to take the case off to use these lenses. I have a fairly slim case and can easily use these lenses with the case on. The way the clips work you can use these lenses with any phone (as far as I know) which is great for those who don't have iPhones.
Although I haven't used this much, I definitely would recommend it to anyone looking for an inexpensive way to up their mobile phone photography game!