iPhone 6plus freezes and unresponsive

I have an iPhone 6 plus 128 gb and it is running iOS 8.1.3. The phone was never broken.

I noticed after the latest firmware update that it hangs and becomes unresponsive. Whenever that happens a black tent of shade covers the screen. The home button doesn't work the lock of the screen doesn't work. I always have to restart the phone.

Has anyone else experienced the same?