This one worked for me. Phone was down to 1% battery when I got the warning and moisture error, though phone has been near nothing damp. Though I'd be safe and turn it off while charging, so it would charge quicker. Was at work so could charge off anything except laptop USB port, tried 3 different charging cables. Then I found this post, held volume down and power button and plugged in the charge cable, phone booted up and started charging. Clearly there is a defect in the moisture detection system in the phones - how do we address that with Samsung?
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