Why do phone chargers break where they only work on one side?
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Are you referring to the fact that the “charger cable” side of things break significantly more often the “phone side” jack?
If so, it’s designed like that… common plugs for low voltage are all designed so the cable side breaks easier in the event of excessive force than the (more expensive) device side (or charger brick)
A great example is HDMI, where the cables are designed to snap and save the inlet side.
UsbA, MicroUSB (as we all know) and even DC barrel jacks (lol) all designed this way
I believe you’re referring to one side of the contact wearing out before the other. Typically humans will insert the charger in the same orientation because of habit. The very, *very* thin plating on the contact will wear out.
Some chargers will break the wire near the strain relief from repeated bending. When you plug it in one orientation, the wire bends together completing the circuit. When plugged in the other orientation, the wire separates disconnecting the circuit.
In other words, the charger only works when the cable is bent a certain way. And it’s only bent that way when plugged in in one orientation, not the other.
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