Galaxy Fold: Is the magnet used in device safe for us?

• It is harmless but may be sensitive to medical and magnetic devices such an artificial cardiac pacemaker and a defibrillator. If you are using any of these medical devices, keep your device at a safe distance from them and consult with your physician before use. 

• We recommend not to place your device near magnetic fields. Magnetic objects such as credit cards, passbooks, access cards, boarding passes, or parking passes may be damaged or disabled by the magnets in the device. Keep a safe distance between the device and magnetic objects.

Also, Samsung always employ strict quality control and safety measures to ensure that devices meet and exceed industry safety standards. All Samsung smartphones undergo rigorous internal inspection test and are always being controlled under Samsung’s high level of quality standards.