Excerpt: The LG Viper 4G LTE is Sprint's first LTE smartphone, and the Galaxy Nexus and HTC EVO 4G LTE soon followed to round up the high end. The one thing missing for now is a Sprint LTE network, but Sprint says they'll light up their first 6 cities in mid-2012 and cover over 100 million folks by year's end. In the meantime, you've got good old 3G EV-DO Rev. A and WiFi for your data needs. The LG Viper is the most affordable in the pack, and it sells for $99 with contract.
Pros: Affordable, bright IPS display and NFC.
Cons: Low resolution display, middle performance matches the midrange price tag. Runs Android 2.3 rather than 4.0.