Phantom Wireless charger was designed with Qi inductive charging technology and equipped with a power-efficient idle mode that won't overcharge your battery or waste energy. Simply attach the receiver to your phone, leave your phone on the charging pad and the charging will start immediately! Phantom Wireless charger comes with a very slim wireless receiver, that you attach to the back of your phone after plugging it into the charging port. You Do Not Need To Remove your Case for your phone to be charged. Phantom iPhone Wireless charger works with these cases Perfectly. In fact if you have an phone case, then putting the receiver between your phone and the case is very convenient.