Are you one of the lot that are unimpressed with the recently released iPhone 5S and iPhone 5C and wished that you bought last year's iPhone 5? Amazon offers unlocked iPhone 5 units that are way cheaper.

Although Apple just released the new iPhone 5S and iPhone 5C, consumers still like old models of iPhone like the iPhone 5 and 4S. In Amazon, iPhone 5 proved to be one of the best-selling smartphones.

Consumers seemed hesitant to upgrade their handsets to the new iPhone 5S and 5C and decided to keep their old devices or just buy the previous models. Some iPhone users choose the iPhone 5 just because its price is lowering down to an attractive level. Others are waiting for the real upgrade to come in the future iPhone 6.

In Amazon, various sellers offered the unlocked version of the iPhone 5 with a slashed price. The discounted prices are way below its original price.

1. Apple iPhone 5 16 GB (Black) - $657

2. Apple iPhone 5 16 GB (White) - $638

3. Apple iPhone 5 32 GB (Black) - $679

4. Apple iPhone 5 32 GB (White) - $728

5. Apple iPhone 5 64 GB (Black) - $733

6. Apple iPhone 5 64 GB (White) - $749

iPhone 5 is the sixth generation of Apple's smartphones following the iPhone 4S. The phone is a slimmer, lighter model that introduces a higher-resolution, 4-inch Retina screen display to the series with 16:9 widescreen aspect ratio. The device also packs A6 chip processor, iOS 6 and 8 MP rear camera as well as 4G LTE networking support and support for DC-HSDPA networks.

After a year, Apple no longer offers the iPhone 5 as it replaced it with the newly released iPhone 5C. The company discontinued iPhone 5 and pulled it from the online store.

On the other hand, iPhone 5S will include the same iPhone 5 specs and features with new addition such as the new 64-bit A7 processing chip with an accompanying M7 motion-sensoring chip and fingerprint sensor on the home button. Meanwhile, iPhone 5C has features of 4-inch retina display, dual core A6 chip processor, and 8MP rear camera. The handset is available in blue, green, yellow, white and red plastic casing.