Heres what Full Tilts mobile site says:

The Rush Poker* Mobile application is supported on the following mobile devices (running Flash v10.1 on Android 2.2):

Mobile Devices (Required Update)

* Acer Liquid Stream S110
* AT&T Captivate (2.2 Froyo)
* Cherry Mobile Magnum HD
* docomo HT-03A (2.2 Froyo)
* HTC Desire (2.2 Froyo)
* HTC Droid Incredible (2.2 Froyo)
* HTC Evo 4G
* HTC Google Nexus One
* HTC Desire HD
* HTC Desire Z
* HTC Sapphire (2.2 Froyo)
* Motorola Droid (2.2 Froyo, 800Mhz and higher suggested)
* Motorola Droid 2
* Motorola Droid Pro / Droid 2 World Edition
* Motorola Droid X
* Motorola Milestone (2.2 Froyo)
* Motorola Milestone 2
* Samsung Galaxy S (2.2 Froyo)
* Sprint Epic 4G (2.2 Froyo)
* T-Mobile G2
* T-Mobile myTouch 3G (2.2 Froyo)
* T-Mobile myTouch 4G (2.2 Froyo)
* T-Mobile Vibrant (2.2 Froyo)
* Verizon Fascinate (2.2 Froyo)

Please Note: Any mobile device with the 2.2 Froyo build (or higher) should support the application.