The word in my android screen was upside down

[AC Question]

Hi, i am using Sony Xperia V. Today I found all stuff on my screen display was totally upside down and reversed! However, the touch position didn't change. For example, the dial button originally located at right bottom corner was now shifted to right top corner. But i still have to touch on the right bottom corner to initiate the dial button.

I have re-set the phone already but it doesn't help. Now i have to use the phone with a mirror in order to see the words in normal manner.
Is it software problem?

 

[the tall guy]

no this isn't normal and I'm not sure what you've did to get this result. Have you perhaps downloaded an app that causes this? were you messing about in developers mode? can you take pictures and upload them so we can see?