New York: A second replacement Samsung Galaxy Note 7 device, deemed safe by the company, has caught fire in the US, US media report.
Samsung has been forced to issue new models of the smartphone following complaints of faulty batteries.
A man in Kentucky said he was "scared to death" when he woke to a bedroom full of smoke, BBC reported.
It comes after another replacement Note 7 caught fire on a Southwest Airlines plane on Wednesday.
"The phone is supposed to be the replacement, so you would have thought it would be safe," Michael Klering of Nicholasville, Kentucky, told a local broadcaster.
He added that his device was not plugged in when it caught fire at his home on Tuesday.
The Note 7 was subject to a mass recall in September, but Samsung said it had identified and fixed the problem.
On Wednesday a replacement Note 7 caught fire on a Southwest Airlines plane due to fly from Louisville, Kentucky, to Baltimore, Maryland.
A Southwest Airlines spokesperson told the BBC: "A customer reported smoke emitting from an electronic device. All customers and crew deplaned safely via the main cabin door."
The plane was evacuated before take-off and Samsung said it was investigating the incident.
"We are working with the authorities and Southwest now to recover the device and confirm the cause," the company said in a statement.
"Once we have examined the device we will have more information to share."
Last month the company assured customers that the fixed devices were safe.