content: AFAIK the samsung issue had nothing to do with the charger or cable. LiIon charging is complicated and the management of it is done on the device. This is true for phones, laptops, cars, etc. The charger supplies a voltage (in some cases the charger can supply a specific requested voltage) and the management chip monitors (or/and adjusts) things like voltage, temperature, current, balancing, etc. There should also be some degree of filtering on the device, but filtering is bulky and should be done on the charger. So basically, the phone should check for the correct amount of voltage, available current, and noise, and use that to reject; they should not be using "their blessing".