Screen blank/ device lock up S6

[AC Question]

I charged my S6 overnight on the included charger using an aftermarket cord like i normally do. Usually i have no issues but recently when i woke up the phone screen would not illuminate and the led was illuminated green indication a full charge. The led remained lit for several hours before going off. I took my phone to my provider and the tech there explained to me that the phone had been over charged. I didn't think that was possible. Eventually, the phone came back around 12 hrs from being removed from the charger. The guy at the provider store then tried to sell me a wireless charger stating that unlike the wired wall charger, the wireless will cease charging the device at 100%. Thoughts?

 

[belodion]

To the best of my knowledge, batteries cannot overcharge, unless there is a fault.

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