Help Phone turns off by itself Problem

[Thomas Lake]

Hi forums.

I have this weird problem with my phone. Basically, when I shut off my phone (clicking on the power button quickly, which just turns off the display), and then turn on the display again, my phone will sometimes shut down by itself for no reason. This is really annoying because I turn off the display often so that my phone doesn't click on random things by itself while it's in my pocket. I have an Alcatel One Touch Fierce.

Thank you for any help.