Did you get the phone from Best Buy? I have heard of this problem from a few people. There is even a YouTube video on this problem and the screen switching from horizontal to vertical and back. I would not even try to fix it on your own because who knows if this may happen again. I would return it to Best Buy and if they do not have one in stock, get your money back. Sprint will be releasing it on Nov 2nd for alot less than Best Buy. I wrote to
dan@sprint.com and since I have been with Sprint for many years, I am getting the Pro for $200.00 with renewal.