There are several BlackBerry features that users value:
Data security. Many articles have been written about this.
Ergonomics. BlackBerry keyboard is patented.
Unique technology not available on other devices.
Design and brand. Appreciated by business founders and CEOs around the world.
I have a Blackberry Classic - exactly THREE years. Used - VERY active and a lot. So - in three years - I never failed, did not turn off, did not glitch, well, nothing at all - it was already disgusting. + they did a typing competition for a laugh - it turned out to be complete equality - that the keyboard is that on the screen. and the MAIN PLUS - when YOU lay down your touchscreen phone - 90% do not recognize a specific manufacturer in it. Blackberry grabs attention on the fly.