Start up time is abysmal!
This has been one of the issues with BlackBerry's for some time now and Im bringing this up because it really affected me recently.
I was out for the day with my Q10 and i used it quite heavily so my battery was drained and my phone went off just as I arrived home. I was meant to meet a friend of mine right away so I plugged my phone in right away and waited for it to start up. Now BlackBerry's have never been known to start up very quickly. I patiently waited for my phone to start up now when it was eventually up and running, It was basically still useless. The hub was still taking time to start up and whilst this is happening, the call and contacts apps are basically redundant. You cannot do a thing with them. I literally had to sit and wait while my friend was waiting and didn't have a clue why I hadn't contacted her yet.
Never felt it was really a issue until this incident.