it could be that it was placed on the charger improperly causing more resistance to charging and in turn more heat. tonight try again. restart the phone and place the phone with the "xus" part more in the middle of the choe. don't slide the phone on there. try one more night and if the phone is hot then replacement is probably a good idea . if you don't want two chargers, then I recommend the tilt over the two if you pare just picking one. if you want two, those are awesome chargers.