3 ms·
Many phones have magnetic switches for use with smart cases. When you close the case cover, a small magnet trips the switch and turns the screen off. The magne
by tjohns 10y ago
Many phones have magnetic switches for use with smart cases. When you close the case cover, a small magnet trips the switch and turns the screen off.
The magnet isn't damaging the phone — at least not at field strengths likely to be encountered in everyday life. Removing the magnetic field should immediately turn the screen back on.
- lostlogin 10y ago4.7t is pretty strong. It isn't a cover detector as it's mainly iPhones I've seen affected and it lasts long after the phone is removed from the field. However this may be what has caused the effect on some of the other phones I've seen exposed. I'll do some experimenting next time it occurs. GE and Seimens seem to have an array of phones that engineers are equipped with and they are happy to expose them to high fields.