Megosztott hang

I was just lying in bed, trying to fall asleep, when I noticed my phone screen light up on its own. I thought it was just a notification, but there was nothing there—just my home screen. A few seconds later, my Wi-Fi disconnected. I sighed and turned my phone off, but then I heard something weird… like a soft tap from the hallway. I told myself it was nothing. Then my phone turned back on. This time, the screen was open to the camera app. I didn’t open it. My hand started to feel cold as I saw t