iPhone 5s neverending "Blue Screen of Death"
So this started happening last week when I was using the YouTube app and all of sudden, bam, blue screen. I tried starting back up and it kept going to blue and it eventually went to my lock screen 30 minutes later. Ever since, it has been happening more frequently, and I can't access my phone for longer periods of time. Right now it has been in a constant and endless loop of blue screens for 4 and a half hours. I am on the latest version of iOS. Please help. What can I do to fix this horrible issue?
iPhone 5s, iOS 9.1, 16gb