Please test QR scanner to read account id from other phone or from nxtexplorer.com.
I have published in other app stores, hope it will get reviewed and will be available for more users. If you use any other appstore, please let me know so that I can publish.
I read without any problem QR Code from nxtexplorer.com, from nxtreporting.com, from standard NRS UI; so I think it's fully functional.
Regarding Blackberry, the 1st App Store is BlackBerry World; the Amazon Appstore is very new for us (from OS 10.3), but working.
Google Play Store is not easily reachable (yes, I know, geeks can say that... but my name is Joe, A. Joe
A remark to increase readability on "Dashboard" (NXT price in BTC): it could be interesting -if possible- to allow horizontal screen, or to enhance 2 fingers zoom.