As far as I remember Stephen Gornick had some success running it on BB, but there were also some shortcomings (don't remember which).
The minor inconveniences in running on BB10, ... detailed here.
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http://bitcointalk.org/index.php?topic=293472.msg6353007#msg6353007And yes, ... backup was one of the issues I described.
I would instead create the private key offline, turn it into a QR code and import it into the wallet
That was the workaround I have used.
The only pain point I have is learning about a new response to my trade offer with Local Trader. Right now I hear a beep -- that's it. There's no interaction with BlackBerry Hub like I would get if there was a new WhatsApp message, for instance. Of course, that's because it is an Android app with no access to BlackBerry notifications system (at least not yet, 10.3 will:
http://devblog.blackberry.com/2014/05/new-beta-of-the-blackberry-runtime-for-android-apps-now-available, and also Android apps can use the Blackberry 10's sharing framework as well. So the Mycelium backup feature will probably work with 10.3 when that becomes available.).
But even with that, whether I use Android or Blackberry, ... it probably would be nice if I were able to get an e-mail or text message notification that I received a new response to a trade ad. All I need to know is that I should launch the app and check my Active Trades.