I confirm that the SiTime 1532 MEMs oscillator (in the newer iPhones) stops functioning after a few minutes in a helium environment. Frequency first rises, then drops to 3KHz. Oscillator will not restart after power cycle. Full video soon! pic.twitter.com/LxzOVSL5s5
— Ben Krasnow (@BenKrasnow) November 8, 2018