IDC's Worldwide Quarterly Mobile Phone Forecast fills the growing demand for detailed and timely forecast information on the total mobile phone and smartphone markets for handset vendors, software developers, service providers, component suppliers, and investors. It provides insightful analysis through quarterly forecast updates by region and country. The core of the product is a comprehensive electronic database detailing projected trends in the highly competitive mobile phone market. IDC's Worldwide Quarterly Mobile Phone Forecast is built on the foundation of IDC's network of country-level quarterly mobile phone tracking services, and its bottom-up methodology delivers an accurate view of the mobile phone market from those closest to it.

Technology Coverage and Data Segmentation

This tracker provides total market size and vendor share for the following technology areas and segmentations. Measurement for this tracker is in units, value, and ASP.

Technologies and subtechnologies:

• Device type: Feature phone, smartphone
• Operating system: Android, iOS, BlackBerry OS, Symbian, Windows Phone, Linux

Geographic Scope

• Asia/Pacific (excluding Japan) (14 countries)
• Canada
• Central and Eastern Europe (6 countries)
• Japan
• Latin America (11 countries)
• Middle East and Africa (10 countries)
• United States
• Western Europe (16 countries)

Forecast Coverage

Forecasts for this tracker are updated quarterly and include historical data from 1Q10, two years (five to eight rolling quarters) of quarterly forecasts, and an additional three years of annual market projections. Forecasts are available at the worldwide, regional, and country levels. Examples of the segmentations being forecast in this tracker include:

• Region
• Country
• Air interface/generation
• Operating system
• Five-year forecast (two years quarterly plus three years annually)

Delivery Schedule and Deliverables

This tracker is delivered on a quarterly basis via a pivot table and via an online query tool. The delivery schedule for this tracker is as follows:

• Forecast data: Wednesday of week 9 after period closes