My iPhone 6 64gb is experiencing the same problem. Screen freezes for 30 seconds or so then unfreezes and freezes again. iPhone is OEM and never been apart since new from the Apple store. Let the battery drain completely and let charge to 100% but this issue is still present with iOS 11, 11.01 and 11.0.2. I’m hoping 11.0.3 will resolve the freezing as it is extremely annoying. BTW - I do not use Facebook so that’s not the issue either.
+
+
=== Update (10/16/2017) ===
+
+
I've been having this same issue with my screen constantly freezing. Issue persists with ios 11.0, 11.0.1, 11.0.2 and 11.0.3. To resolve it, I signed up for an Apple developer account and download ios 11.1 beta 2 and I'm happy to report no screen freezing!! You can do the same thru Apple or just wait for the new release to come out in a week or 2.
My iPhone 6 64gb is experiencing the same problem. Screen freezes for 30 seconds or so then unfreezes and freezes again. iPhone is OEM and never been apart since new from the Apple store. Let the battery drain completely and let charge to 100% but this issue is still present with iOS 11, 11.01 and 11.0.2. I’m hoping 11.0.3 will resolve the freezing as it is extremely annoying. BTW - I do not use Facebook so that’s not the issue either.