Groups mobile devices based on the news services (Channel I/B, EZ News Flash, W+INFO, and so on.) that they support. When a visitor uses a mobile device with news service support to access your site, the Information Services report increments by at least one. If the phone supports multiple news services, each of those groups in the report increments. Because of this, the sum of the groups might be greater than the total shown at the bottom of the report.