It was unclear how the administration could implement the ban on WeChat in mid-September. It could order Apple Inc and Alphabet Inc's Google to remove WeChat from their app store, or order the apps to stop offering access or updates to U.S. users.
Some Chinese immigrants and expats worry losing access to the popular WeChat could cut off contact with family and friends in China.
In the U.S., WeChat app downloads in the U.S. rose by 41 percent in a six-day average from the week prior to the U.S. ban announced last Thursday, and QQ downloads have tripled in the past week, according to data from Sensor Tower.
In 2019, Chinese visitors spent more than 1.3 billion dollars visiting the San Francisco Bay Area. For many of them, WeChat, with its ability to make payments, played a valuable role.
Apple has spent years building China into a 44 billion U.S. dollars growth driver. In the second quarter of 2020, the company's revenue from the Chinese market accounted for over 15 percent of its total.