From a Home screen, touch and swipe up to display all apps.
Navigate: Settings > Network & Internet > Data Usage.
Do one of the following:
Change Data Usage Cycle:
From the 'Mobile' section, tap Data warning & limit.
Tap App data usage cycle select the Usage cycle reset date 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).
Tap App data usage.
Tap the Gear icon (upper-right).
Tap Set data limit to enable .
If presented with Limiting data usage screen, review the message then tap OK.
Tap Data limit.
Enter the preferred data usage limit then tap Set.
Set Mobile Data Warning:
A notification message appears upon reaching the specified data usage level indicated by the gray warning line.