You must be joking. Our game has fairly high requirements in terms of screen size and O/S version etc. Yet according to our stats page we're on 1,200+ different devices.
The biggest seller for us, by a long way, is Samsung Galaxy S2 if that's of any use. There's a couple more obvious names below that and then the remaining installed devices is grouped into "other". It really IS that fragmented out there.
EDIT: Here's a listing from our biggest seller:
Samsung Galaxy S2 (GT-I9100)
Asus EeePad Transformer TF101 (TF101)
Samsung Galaxy Nexus (maguro)
Samsung Galaxy Tab 10.1 (GT-P7510)
HTC Desire HD (ace)
Samsung Galaxy S (GT-I9000)
Samsung Galaxy Nexus (toro)
Acer Picasso (picasso)
EDIT2: These are installs that are still active. We've sold triple this number of copies, so older phones may not be well represented.
EDIT3: And according to complaints and one-star reviews, the game doesn't actually run at all on any of those platforms above. Of course it's nothing to do with jailbreaking, custom roms, nutjob screen control widgets and virii. Oh no, no siree. It's all our fault.... *sigh*