The LG Viper looks pretty good and feels solid, although it’s a bit thicker than the competition, but for a mid-range smartphone it’s alright. It has no special exterior features that would make it stand out from the crowd, but it’s not ugly either, with a chrome accented frame around the sides, a brushed metal finish on the back and the big display on the front.

The phone is powered by a dual core 1.2 GHz Tegra 2 processor, which is still powerful enough to take on any apps and games, despite the onslaught of faster dual cores and the new Tegra 3 quad core platform. The integrated GeForce GPU is exceptionally good at games and any 3D/graphical apps, but the 512 MB of RAM that accompany the chipset is a bit on the low side, although with Android Gingerbread, it’s more than enough.
The other hardware specs of the LG Viper are all that you’d expect from a modern smartphone: besides the 4G LTE radio, you’ll find a Wifi N and Bluetooth adapters, GPS, DLNA compatibility, a 5 megapixels camera on the back with support for 720p HD video recording, a 1.3 megapixels camera on the front that should be great for video calls and VoIP chat, a 3.5 mm audio out jack, a micro SD card slot for your storage space, and even an NFC radio on the back, which means that you can use Google Wallet, Square and other payment methods that need it.
source:gadgetmania