Iphone 6s screen just went off but "Hey Siri" worked
My Iphone 6s just freaked out and the screen went blank, however, "Hey Siri" and sound still worked. When people rang I could hear it but I was unable to answer the call. I had tried holding the home and power buttons independently as well as together but they weren't working. Eventually, I tried once more to hold the power and home buttons together and the apple logo was on the screen like it was booting up after being turned off but this makes no sense because Siri and sound were working the entire time. Why is this?
Hi. Try posting this in the iPhone forum. There are lots of experts over there.
Try the steps here:
If your iPhone, iPad, or iPod touch won't turn on - Apple Support
It's more rare than a blue moon, but sometimes that happens. The screen just stopped displaying is all. If the issue becomes persistent, it might be time to get concerned, but it sounds like you resolved your own issue so good job on that!