I ran my sencha touch application in Android Galaxy and Motorola Xoom, both of them where treated as Phone form factor. When I checked the Support.js class I found that Sencha touch considers a device as a tablet only if it is an iPad. How to determine Android tablets? I doubt how this will treat Blackberry playbook device.

Code:
/**
* @property Tablet True if the browser is running on a tablet (iPad)
*/
this.Tablet = this.iPad;
/**
* @property Phone True if the browser is running on a phone.
* @type {Boolean}
*/
this.Phone = !this.Desktop && !this.Tablet;