Sprint offers the iPhone 4 8GB for free with free shipping when you activate a new line (including adding a line to your Sprint account). Some restrictions apply. Sprint offers unlimited data, text and calls to any mobile phone (plus 450 minutes to non-mobile phones) starting at $79.99 per month with a 2-year agreement.

iPhone 4 is available in Black or White and features a high-resolution Retina display, a 5-megapixel iSight camera, FaceTime video calling, long battery life and runs iOS 6. This is way more than a Smartphone; it plays  MP3s, videos, gaming, apps, and more. Save money by purchasing this older model rather than the latest iPhone.

Note this phone is 3G capable, not the faster 4G. However, depending on your data download requirements, 3G may be a good value option.