Being someone who formerly had an android phone, and being someone who had rooted his phone the entire time I owned it, and my associated experiences with all of the associated nonsense, I can't think of a valid reason that the Bringgo app wouldn't work on all phones.
The only issue might be a minimum screen size, if some of the display components won't scale down past a certain point.
So if all of you android folks can find out which phone on the list of approved droids had the smallest screen size and resolution, it would be likely that any equal or larger device could be made to "look" like another phone to the app, and then work.
This would likely require rooting your handset, however. I know there are root apps to make your phone seem like another model.
But that's as far as my personal interest takes me. ...Buy an iPhone. It's a phone. And it works. This is not a flameworthy post. The iPhone works. The android market-space is too crowded with too many different phones.
This is primarily an android problem, it's not a BringGo problem.
If Samsung, HTC, Motorola, Google, and everyone else's brother would stop releasing 15 different android phones a week you guys wouldn't be having this problem with the apk....
Don't bother attacking my post. I know someone is likely to try to say something about apple or freedom of choice blah blah. Android manufacturers are suffering from the same problem GM had pre-bailout. 15 different version of the same car causing needless confusion and driving up end user costs and lowering the quality of the product.