iOS 8.4 crashing
So, I got the iOS 8.4 update and let it install completely. I also let my phone charge to 100%. I unplugged my phone and entered my passcode, and all my phone does is load up my wifi and all the notifications, then the screen gets dark and crashes as if I power off my phone by holding down the power button, shows weird lines down the screen (I did not drop my phone before thsi started to happen, it was sitting on my bed while installing and charging) then it shows the apple logo, and repeat. I've tried multiple times but nothing works. I am using the iPhone 4s.
iPhone 4S, iOS 8.4