The above examples are based on averages and are estimates only based on typical file sizes. Data usage may vary depending on the specific content viewed or downloaded, device, network and other factors. The actual amount of data used for the described activity can vary. The definition of SD rate is streaming at 533KBPS and for HD streaming it is 2000KBPS. The size of photos, videos, web pages, file attachments, applications, and other wireless internet usage varies widely and could result in data usage exceeding allotment. Wi-Fi usage does not count against the data included in your wireless data plans. Visit get.straighttalk.com/data-usage to view detailed calculation data. Monitor your usage by signing into the Straight Talk My Account App.