I bought this as a spare for my wife to use at work but it just doesn't cut the mustard. She has a Unicorn Beetle case on her S7edge and this charger will not connect through it to keep a constant charge, instead just constantly connecting and disconnecting. It isn't that her case is too thick as other no name brand cases work fine, this one just isn't powerful enough no matter how you line the back of her phone up to it.