"When we launched CrackBerry.com 10 years ago, we set out to make it a fun and useful destination where BlackBerry Smartphone owners could share their excitement and learn to unleash the full potential of their BlackBerry. A decade later, the CrackBerry community is as active and passionate as ever and I know our knowledgeable members and volunteers will be excited to welcome and assist more BlackBerry owners with their questions."
Use case number one: smartwatches. User knows that his/hers phone is ringing in the pocket but the feature of a smartwatch should be to decide whatever to answer/decline the call or not by looking at the watch.
I was able to code smartwatch app five years ago for OS 4.x but such limitation is degrading the usability on OS 10.