Samsung has been struggling with a recall of 2.5 million Galaxy Note 7 handsets due to complaints of exploding batteries, problem the replacement phones are supposed to fix. But on Wednesday, a Southwest Airlines flight leaving Louisville, Kentucky was evacuated after a passengers new Samsung phone began emitting smoke. Brian Green, the owner, told tech news website The Verge that the phone was a replacement, which he picked up on September 21. He also provided a picture of its box, which has a black square symbol indicating that it was a replacement. Some 60 per cent of US consumers had swapped their dewces for replacements by the end of last month, The Verge reported Green had powered down the phone for takeoff, an account The New York Times confirmed through other eyewitnesses. The heat damage from the apparent explosion was so severe that a fire official could not independently verify the model of the