TAIPEI -- Recent outbreaks of COVID-19 are disrupting plans by Apple, Google, Amazon and their key suppliers to shift production from China to Vietnam as governments tighten border controls to contain outbreaks of new variants of the virus. Google's upcoming Pixel 6 smartphone range, for example, will be built in China even though the company had planned to move production of the handsets to northern Vietnam early last year, four people familiar with the matter said. Like the Pixel 5 range last year, the new phones will be assembled in the city of Shenzhen due to limited engineering resources in...