iPhone 6s freezing after locking device
Hi I have problem with my Iphone 6s. Sometimes after device is automatically locked, it becomes unresponsive (I can't use power/home button or raise to wake to unlock my device) for about 10 seconds. You can see it on 0:40 in my video. I tried to update my device to IOS 11 beta but it's same. Do you know what can be broken or how to fix it? Thank you.
My video of problem: https://youtu.be/hfp_12rCtc0
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