The bag has not only the neodymium magnets in the lid but also on the other side. This means that my Nexus 5 turn on when I put into it. The magnetic field is so strong that it triggers the Quick Cover function. Probably the other devices with such a function (eg Galaxy S4) will also be so. In addition, the compass spins after the Nexus 5 was in his pocket. The bag is a bit tight for the Nexus 5, but since it is genuine leather, it will certainly adjust. The points I have because of the magnets may be magnets abgezogen.Im cover, but in the bag itself include iron sheets to protect your phone from to strong magnetic fields.