Oh more hate on the i900:
in 2007 supposedly there was a BlackBerry Application Suite in Development. This meant you could run BB OS 4.x on wm 6.x phones.http://forum.xda-developers.com/archive/index.php/t-626456.html
but BB thought: who's going to buy our ugly phones if they can run our OS on better ones?
So just in 2011 they let it die quietly.
But again, there's more hope: Whatsapp does run on a very old symbian version (s60 3rd).
Now if only someone could port that one to wm 6.1 or...run Symbian on wm 6.1
Porting is easier said than done though:http://msdn.microsoft.com/en-us/library/aa454903.aspx#symbianmigration_topic2
Exit Omnia, I got an LG Optimus 2x 2 weeks ago. It runs on Android so guess which app I immediately installed? That's right.
Have to say that it took me a few days to get along with the phone. During that time I thought about switching back. But now: it just works so much better in each and every way!