Southwest Airlines on Wednesday evacuated a plane in Louisville, Kentucky, after a Samsung Galaxy Note7 began popping and issuing thick smoke. Samsung last month began replacing Galaxy Note7s globally, following reports of several of the devices catching fire or exploding. It blamed the problem on an "isolated" faulty battery cell issue. The device involved in the Southwest Airline incident reportedly was a replacement phone, according to owner Brian Green. Samsung has said it will verify whether the phone actually was a replacement.