The LG Viper will be available for $99, and will come with truly unlimited 4G LTE service, Sprint .

, "Pairing innovative technology with the Sprint 4G LTE network and unlimited data plans, LG Viper 4G LTE helps manage work and personal time for people on the go, like today's 'Power Parents.' "

The company’s vice president of product development said the LG Viper "pairs perfectly with our unlimited data plans to bring customers the benefit of new technology, including our upcoming 4G LTE capabilities at a great price."

None of the other major wireless carriers currently offer on 3G or 4G LTE networks. However, some old customers have been grandfathered in on , but those customers only have the illusion of "unlimited data" -- after they reach a certain data limit, their , or slowed back.

For example, "unlimited" users on AT&T's network get slower network speeds after they hit 3GB of data (if they're on a 3G/4G HSPA+ phone), or after 5GB of data (if they're on a 4G LTE phone). Verizon starts throttling "unlimited" 3G/4G HSPA+ users after just 2GB of data usage, though it only does this when the network is congested. Verizon does not currently throttle 4G LTE users, though it reserves the right to do so in the future. Throttling only occurs if users have "unlimited" plans; users with tiered plans are not affected.