After receiving my Xs Max, I erased all content and settings on my then fully functioning iPhone X (which was still running the latest version of iOS 11). After erasing it showed the “Hello” screen. I then powered off the phone. A couple days later I went to turn it on to set up as a wifi device and was nonresponsive. It will not power on despite the following (after charging the phone again): 1. Holding down the power button 2. Force restarting (vol up, vol down, side button) and also (vol up, vol down and side+vol up) I’ve done the above using multiple time variances (e.g. holding buttons for 10 seconds, 30 seconds, etc.) I have also connected to iTunes (windows version) did not recognize the device. The battery was fine prior to erasing and powering off. No repairs have been made to the phone previously, e.g. battery or screen, etc. Any other ideas before I consider a Genius appointment?