As mentioned in the statement below, in the US, Samsung is working with the US Consumer Product Safety Commission to investigate the problem, while customers should "power down and take advantage of the remedies available, including a refund at their place of purchase." After a slew of reports citing meltdowns in supposedly safe replacement models, Samsung had no choice but to do this. No matter how much you like the phablet, you simply can't be sure it's safe -- contact your carrier, retailer or Samsung directly to get another phone or a full refund.
Update: Get the full story on Samsung's issues -- and what it can do next -- right here.
We are working with the US Consumer Product Safety Commission (CPSC) to investigate the recently reported cases involving the Galaxy Note7. Because consumers' safety remains our top priority, Samsung will ask all carrier and retail partners globally to stop sales and exchanges of the Galaxy Note7 while the investigation is taking place.
We remain committed to working diligently with the CPSC, carriers and our retail partners to take all necessary steps to resolve the situation. Consumers with an original Galaxy Note7 or replacement Galaxy Note7 should power down and take advantage of the remedies available, including a refund at their place of purchase. For more information, consumers should visit samsung.com/us/note7recall or contact 1-844-365-6197.