Thank you for contacting us.
Unfortunately, the RadNumericBox control is available only in Windows 8.1 applications.
You can use the UI for Windows Phone 8
suite in Windows Phone 8/8.1 Silverlight
applications. The UI for Windows Universal
suite can be used to build the following applications:
- Windows 8.1
- Windows Phone 8.1
The UI for Windows Universal
suite contains both universal controls and Windows 8.1 specific controls, that can not be used in phone applications. For more information you can see the product page UI for Windows Universal
where all available controls and their target platform are listed.
I hope this helps. Please, let us know if you have further questions.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.