From a Home screen, swipe up from the center of the display to access the apps screen.
Navigate: Settings > Network & Internet > Data usage.
Do one of the following:
Change Data Usage Cycle:
Tap Billing cycle.
Tap Billing cycle once more.
Set the date to match the first day of your billing cycle then tap SET.
Refer to the My Verizon website for billing cycle date.
Set Mobile Data Limit:
Mobile / cellular data is disabled upon reaching the specified data usage level indicated by the red limit line. To continue to use apps that require a data connection (e.g., Browser, Email, Market, etc.), Wi-Fi can be used or the mobile data limit must be manually adjusted (overage charges may apply).