Can't try my app on my Samsung Galaxy Ace

Hi,

I'm using Flash Builder 4.5.1 to create iOs and Google Android apps. But I have a problem : I can't try my app on my android phone, my Samsung Galaxy Ace.It gives me this error :

Failure [INSTALL_FAILED_INVALID_APK]

How can I fix this problem ?

And i have an other question : Will my app be available for all Android phones or just Phones which supprt AIR ?

Thanks,