What caused BlackBerry failure?

Related questions

1. Will BlackBerry phones still work?
2. Has BlackBerry stopped making phones?
3. Can I find my lost BlackBerry phone?
4. Does the BlackBerry still exist?
5. Why is BlackBerry banned?
6. Does BlackBerry have a new phone?
7. Does BlackBerry still exist?
8. Is BlackBerry shutting down?
9. Is BlackBerry any good?
10. What is special about BlackBerry?

Tags

1. #google
2. #device
3. #phones
4. #enabled
5. #mobile
6. #touchscreen
7. #strategy
8. #imitation
9. #apple
10. #devices
11. #launch
12. #fancy
13. #vision
14. #blackberry
15. #iphone
16. #failure
17. #consequence
18. #finally
19. #errors