I'm having an issue (on Samsung S5), just started 4 July 2015. Device stating my original charger is not compatible, I've never used anything but the original charger. The device is to not taking a charge via the USB port either, getting the same message - charger not compatible.
No, damage to phone or power charger. I read other folks are too having this issue, so sounds more like "another" Verizon issue at the customer expense.