Share your experience!
Hi there,
i bought my Xperia U on September 28th 2012 and i checked the total call time yesterday (27.03.2013), it was showing some abnormall value - 373761:27:40 which is just IMPOSSIBLE.
What is the issue with it?
I just try reset factory settings. SUS update, PCC update, Flashed different firmware using flashtool. But it happen continuously.
Where's Xperia supporters? 
Your screenshot looks like the phones service. I recommend that you download and install a call meter app from Google Play instead. The service menu is intended to be used for testing by our service locations and might contain options not in use for some models.