You can view both pre and post-paid real-time AT&T account data usage using the pre-installed AT&T Communication Manager desktop widget, or by logging into your AT&T account online.
Figure 1 provides an example of the widget displaying real-time data usage for a prepaid account.
Figure 2 provides an example of the widget displaying real-time data usage for a postpaid account.
Figure 1. Real-time data usage for a prepaid account
Figure 2. Real-time data usage for a postpaid account