I lost my phone in the bus Sapa to Hanoi. so I know later. I asked the airport employee and she called the driver who name is nguyen Duc Phuong(HK buslines. 29H-953.15). He called a taxi driver to help me wholeheartedly and was able to find my phone. Sincerely thanks to him. I was touched by his kindness. Thanks to you, I was able to finish my trip well in Vietnam. Thank you, kind driver. I wish you all the best.