At times when there’s no such thing as an unlimited data plan on Verizon, the worst thing that can happen to anyone, is to have an iPhone that won’t adequately switch to Wi-Fi when available. Such was the case for the Verizon iPhone 5, which aside from not being able to handle LTE-data along with a phone call simultaneously; it also kept sucking mobile data when you switched it to Wi-Fi.
Apple has just issued a specific update to Verizon customers that fixes the issue. Now this isn’t your typical iOS 6 update, but more of a Carrier Settings update, so the procedure is a little different. What you have to do is navigate to Settings > General > About and wait to get a “Carrier Settings Updated” message. Turn your phone on and off to reset, and you should be ready. To verify that the update was applied, navigate again to Settings > General > About and make sure that the carrier information is set to Verizon 13.1, or wait to get the update again.
Let us know if the update didn’t work for you in the comments.