Now if you want to check whether your phone will explode or not, you should see the label below on your Galaxy Note7's box.
Note the tiny black box on the barcode label and big blue colored "S" on the note 7 box - purportedly mentioned for "Safe". So, if your unit has this label, it's fine. If it does not, then make sure that you return it asap.
If you have lost your Note7's box but need to check about device safety, Samsung will provide IMEI codes of safe ones online from September thirteen. You'll be able to enter your handset's IMEI into it and it'll tell you if the device is good or not.
And if even that somehow does not work for you, then Samsung's customer care centers are ready to assist you to check whether or not you've got the safe model.