Post #3436921

Several commenters have mentioned the MRI helium / iPhone MEMS interaction, which is much more interesting than the CAT X-ray / flash memory corruption that I suffered! tl;dr Recent iPhones use micro-electromechanical systems (MEMS) as the resonator in crucial oscillator circuits rather than quartz crystals, and helium can penetrate the packaging of these systems, bond to the surface of the resonators, and modify their behaviour enough to ruin them. https://www.ifixit.com/News/11986/iphones-are-allergic-to-helium