Phone shutting off randomly since 8.1 was installed.

[MChaney3563]

Has anyone else ran into this issue? I can be listening to music and my phone will shut off. Most times, I have gone to check my phone, and it won't wake up, then I have to take off my case, the pop the battery out, and do all that stuff for it to turn back on. I didnt have this issue until I installed 8.1 My phone did this twice yesterday and its getting tiresome.

Any help would be great. Thanks