iPhone 14 pro max suddenly dead

My iPhone 14 pro max was dead this morning after spending all night on an Apple wireless charger attached to its back (which was separated from the charger by the thickness of the Otterbox case). Standard restart (volume-down+power) didn’t work and putting it on a lightning cable charger didn’t either. Eventually I did a search, found reports going back to 2022 that suggested the volume-up/volume-down/power-button technique, which worked. The phone came up at 70% charged, suggesting it froze not long after charging began. Many thanks to those who previously reported this.