iPhone 5 unlocked smartphone black (also available in white)
The iPhone 5S and the iPhone 5C are available now but in my opinion the price for the 5S is too high and the feel of the 5C is too cheap, but that is my personal opinion of course. Here are the links for the iPhone 5S and the iPhone 5C on Amazon
The original iPhone 5 for me is the second best prepaid phone at the moment. No true Apple user would be happy with anything less quality than an Apple. This phone comes 2nd for me because of the price. Apple quality is awesome but I was not prepared to pay the extra dollar for it. Also, the iPhone 5 does not communicate very well with a windows computer. This was an obstacle for me.
For the rest, The iPhone 5 is an awesome phone. The design of this Apple iPhone is sleek with glass on the front and aluminum plate on the back. The camera on the back and the LED flash are both nicely incorporated into the body of the iPhone.
On the front Apple placed the ‘Front Facing Camera’ In the aluminum. This is a change from the previous model where the dark color of the camera module made the front camera not interfere with the overall design. I likes the way this was done in the iPhone 4 better.
Apple is very happy with the Retina Display screen of the iPhone 5. The human eye can not distinguish the pixels. All texts and images appear like “printed pages”, according to Apple. This shows the superb quality of the iPhone.
The iPhone 5 uses the new very fast A6 processor.
specs:
H/L/W/D: 4.87 inches (123.8 mm), 2.31 inches (58.6 mm), 0.30 inch (7.6 mm),
Wheight: 3.95 ounces (112 grams)
Talk time: 7 hours on 3G, 14 hours on 2G (GSM)
Standby time: 300 hours
Internet use: 6 hours on 3G, up to 10 hours Wi-Fi
802.11b/g/n Wi-Fi
Blue-tooth 4.0 wireless technology
Clear Apple Retina Display
UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz);
GSM/EDGE (850, 900, 1800, 1900 MHz)
Photo and Video: 1.2MP Video recording, HD (720p) up to 30 frames per second with audio
8-megapixel iSight camera
HTC Smartphones Prepaid
HTC One V prepaid 
HTC sometimes gets a bit lost in the battle between Samsung and Apple but Taiwanese company produces high quality smartphones for a very affordable price. In this time of economic crisis a factor to take into account. The quality of the phones is illustrated by HTC featuring BEATS Audio.
The HTC One in its variations is the flagship of HTC.
HTC One S Android Phone, Black (T-Mobile)
HTC One SV 4G LTE (Boost Mobile)

LG Smartphones Prepaid
LG G2, Optimus and LG 800-series
(Click on the thumbnail or buy now button to see more details, specs and other providers)
I recommend the LG G2 as the best LG prepaid smartphone.
LG G2 Unlocked Smartphone