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I am sure it's because phone companies don't want to deal with designing, manufacturing, design defects, warranty claims if it fails, etc.
I do wonder if it can't be done better with programmable magnets, locking one of those in place from the bottom of the device might be interesting.
You you mean electropermanent magnets?
Idk if that's another name for them, but what I meant was polymagnets
Those use arrays of electropermanent magnets
Aah cool, interesting
Edit: let me pick your brain regarding them as it seems you know more about them, is it feasible? What I described that is