In this task, you will be presented with a question and you have to answer the question based on your knowledge. Your answers should be as short as possible.
One example: Who were the builders of the mosque in Herat with fire temples ?
Solution is here: Ghurids
Explanation: This is a good example. Ghurids were the builders of the mosque in Herat with fire temples.

Now, solve this: What company designed the phone that had a 2011 release date ?
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
HTC Corporation