I am really very disappointed since I have added the Sprint Services. I have the 4G device and I have given the amount of the $10 as a month premium charges of the Sprint to access the 4G network on my device. I am using the Galaxy S2 but I am not finding that these service is been rolling out to work in proper with the 4G network. The Sprint is going to upgrade the network to LTE from the 4g WiMax and I am thinking that the Sprint's Unlimited Data Smartphone Plan will be coming to an end soon. What do you think guys?