The president's mistrust in TikTok seems based purely on the fact that it is a Chinese company and he doesn't like it having such a big presence in his country but his animosity towards the app has coincided with it developing a large anti-Trump identity.
Some have suggested that even if Trump successfully bans TikTok in the United States that users could still use the app with a VPN (virtual private network) or by changing their location on their mobile device.
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Whether these methods would actually allow users in the US to continue using the app remains to be seen. TikTok has already been banned in India, where there have been mixed reports about the success of using VPNs for TikTok. The Indian Express reports that although the app is no longer available on the App store or Google Play those that already have the app downloaded can still use it.