Guys, if you all complain that Xperia Z gets hot and I can say the temperature will not be as high as S4.
The temperature can be as high as 50 Degree Celsius, check out below :
Is your Samsung Galaxy S4 overheating?
My Xperia Z also hit 50. Was running a few apps at the same time. Downloading movies at the background and surfing Ebay. Hit 50 and I did not realise cause was not holding in my hand. The system ui fail then I realised the Phone running hot. The phone was Damn hot that I need to do a reset and temp was at 49 after the restart.

