If you're still a Galaxy Note 7 owner, be sure to leave it at home if you're catching a flight.
The Department of Transportation – along with the Federal Aviation Administration (FAA) and the Pipeline and Hazardous Materials Safety Administration (PHMSA) – has officially banned the smartphone device from all flights in the U.S.
You can't carry it on the the flight. You can't even put it in your checked baggage. In fact, they're even banned from being shipped as air cargo.
“We recognize that banning these phones from airlines will inconvenience some passengers, but the safety of all those aboard an aircraft must take priority,” Transportation Secretary Anthony Foxx said in a statement.
Early in September, the FAA asked people to not turn on or charge their Note 7s on planes.
The actual ban of the device went into effect Saturday at noon ET.
According to the Department, "the Samsung Galaxy Note7 device is considered a forbidden hazardous material under the Federal Hazardous Material Regulations."
What if you have a Galaxy and plan to travel?
You can't bring it with you. Period.
The DOT says anyone with the device will be denied boarding.
And if you try to sneak it in a suitcase, you may be subject to fines and criminal prosecution.
This could be a big problem for anyone who is currently traveling with the device. If you're in that position, DOT recommends calling Samsung or your wireless carrier to arrange a refund or replacement.
This comes just days after Samsung announced that it was done with the Galaxy Note 7 for good.
The company will no longer make, market or sell the device.
The Galaxy Note 7 sold for between $850 and $890 in the United States starting in August, but reports of battery problems quickly surfaced. By Sept. 15, Samsung had received 92 reports of the batteries overheating, including 26 reports of burns and 55 reports of property damage, the U.S. Consumer Product Safety Commission said.
This prompted Samsung to recall 2.5 million Note 7 devices last month, and issue replacement devices. But those, too, were having problems, so on Monday, Samsung urged anyone with the phone to shut it off and stop using it immediately.
For more information about the recall, click here.