Usage controls are only available on non-smartphones. The only smartphone that can have usage controls is the Droid Incredible 2, and they do not work with the newer data plans.
Thanks for your inquiry! Usage controls was previously not available on the iPhone, but it is now available. It is available on the majority of smartphones, but not LTE devices at this time. To add Usage Controls:
**UPDATE** As of 10/25 Usage controls is available on LTE devices.
I just want to clarify, as I literally just got off the phone with a representative a little while ago, and I signed up for Usage Controls on one of the iPhone 4 phones on our plan. Though Usage Controls are supported on the iPhone, do Verizon's DATA PACKAGES support Usage Controls? From what I'm reading this was the bigger issue. Right now I have a 2GB data package on the phone in question. Will this limitation prohibit the ability of Usage Controls, more importantly the Block Calls/Text feature for up to 20 numbers? Please advise as soon as you can, as if I just signed up for an extra charge that will not even benefit my line of use, then I'd like to cancel it immediately. Thanks.