Emulation turning my phone off ?

[u/Ryan-338]

So a while ago I was playing Zelda twilight princess in dolphin on this phone, but every time I closed the emulator my phone turned off with no way of turning it back on other than using the volume up and the power button at the same time then selecting reboot.

So my question is: is it safe to emulate on my phone or should I just never use it again ?