Mobile Phone CPU Temps

[obotrobot]

I have a Motorola Moto g and I use the program Clean Master on it today I was playing Dead Trigger for about 15-20 minutes and when I closed it down I ran Clean Master and it gave me an alert that my CPU was overheating and it said that the temperature was 104 degrees F I'm no expert on mobile devices so I am just curious is that actually a high unsafe temp for a phone and if not what is?

 

[shahbaz200]

Thats 40C and its fine. I reach 60C-70C with intense gaming like GTA San Andrease, Asphalt 8 on my SIII. 40C seems fine to mee