To change the data usage cycle on your device, view data usage and set data warnings and restrictions, view this info.
Data usage info provided by the device may differ from actual usage. For data usage info provided by Verizon Wireless, refer to the My Verizon website.
For more info on data usage and alerts, check out these Data Usage FAQs.
Mobile data (cellular data) is disabled upon reaching the specified data usage level indicated by the red limit line. To continue to utilize apps dependant upon a data connection (e.g., Browser, Email, Market, etc.), a Wi-Fi connection can be used or Mobile data must be manually re-enabled (overage charges may apply).
From a Home screen, navigate: Apps icon > Settings > Data usage (Wireless & networks section).