How Hot Is Too Hot?

[demonicruble18]

So I just got my XZ2 Premium today, was using the Xperia XZ before this, anyway I mine cryptocurrency on my phones, I have an app that tells me hot hot the battery and CPU are getting, however with this phone I can see the CPU temp Xperia XZ was always 0 degrees Celsius battery got hot though, so I'm not to sure how hot is too hot for the CPU, I was testing it out and the hottest I saw the CPU was 64 degrees Celsius is that too hot? 

[tomo100brt]

That app is crap. Did your phone CPU froze? CPU temp can't be 0 degrees Celsius. CPU is alwys working so there must be temp. On my XZ2 Premium it is between 30 degrees Celsius and 50 degrees Celsius. If I don't use phone temp is about 33 degrees Celsius if I use it it is about 40 degrees Celsius and if I play games or use camera for long time it is about 50 degrees Celsius.

[Strampke]

Cryptocurrency mining on a phone?

That is hot!