TOKYO -- The U.S.-China trade war is testing whether smartphone users are more loyal to their devices or the apps that run on them, and the answer is not as clear cut as Donald Trump may have hoped.
Consumer question goes to heart of US efforts to curb China's biggest phone maker

Sales of Huawei's Mate 30 have been strong in China but losing Google services could hurt it overseas. (Photo by Ken Kobayashi)
TOKYO -- The U.S.-China trade war is testing whether smartphone users are more loyal to their devices or the apps that run on them, and the answer is not as clear cut as Donald Trump may have hoped.