WeChat users in the U.S. rushed to install the app before it could disappear from the app stores. They have also turned to QQ, as the ban did not specifically cover this product.
Bryant also cautioned against a disruption in cross-border investment, as her company helps bring in investment from around the world, especially China.
Apple Inc., Ford Motor Co., Walmart Inc., and Walt Disney Co. were among those represented in the call in which they expressed their anxiety that competitiveness in China may be undermined by the order. As planned, the new presidential executive order will take effect next month, banning U.S. companies from "any transaction that is related to WeChat."
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.
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.
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.
Some users said they planned to access WeChat in the U.S. using a virtual private network (VPN).