Users of the Samsung Galaxy Note8 reported lockups smartphones
On the official forum Samsung is quite a large number of user complaints Samsung Galaxy Note8 who report that their smartphones crash under normal usage scenarios.
More specifically, the most common reason for unresponsiveness of a smartphone is the address to the contacts list, both through the app and, for example, when you select a contact from the list of dialled calls.
The only way to return the device to normal operation is to restart. It should be noted that the problem manifested among the people of different regions and countries.
An official statement from Samsung is not followed.