Smart Switch doesn't "add" other devices to your account.  What it does is let you transfer the information (address book, apps, phone numbers, files, etc.), FROM your old phone TO your new phone, so you do not have to re-add all of it manually.  It's a brilliant, beautifully simple, and seamless function that saves you so much time, and expended energy!  One of the absolute best features of Smart Switch is that it allows you to transfer information FROM a NON-Samsung phone (ie; Apple iPhone, Google phone, LG phone, Huawei phone, Sony phone, Nokia phone, Motorola phone, etc.) DIRECTLY TO, your new Samsung phone!   A FABULOUS time saver!! ... View more