In July 2023, Iranian Mehr News Agency reported «experts from Douyin» will meet Iranian business in Tehran to enable Iranian exports to China. It was also the most-downloaded app on Apple’s App Store in 2018 and 2019, surpassing Facebook, YouTube and Instagram. TikTok was downloaded over 104 million times on Apple’s App Store during the first half of 2018, according to data provided to CNBC by Sensor Tower.
In 2020, TikTok updated their terms of service to ban content that promotes «premium sexual content», impacting a large number of adult content creators. TikTok is regularly used by sex workers to promote pornographic content sold on platforms such as OnlyFans. In 2020, digital media companies such as Group Nine Media and Global used TikTok increasingly, focusing on tactics such as brokering partnerships with TikTok influencers and developing branded content campaigns. Existing sellers on FeetFinder said that the videos often misrepresented how «easy» it is to make money from posting feet pictures. In 2022, it was reported that a trend called «de-influencing» had become popular on the platform as a backlash to influencer marketing. TikTok reportedly made as much as a 70% commission on some of them, a figure that the company disputed.

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Users also can set specific videos to either «public», «friends only», or «private» regardless if the account is private or not. Content is curated by TikTok’s artificial intelligence depending on the content a user liked, interacted with, or searched. On 18 April 2024, Notes first released to users in Canada and Australia for limited testing. Many platforms and services, including YouTube Shorts, began to imitate TikTok’s format and recommendation page.

• A data scientist said US user data were emailed to ByteDance workers in China to identify viewer interests.
• The momentum of digital feminist movements through platforms like TikTok have additionally encouraged many social media agents and marketing campaigns around the world to adopt some degree of feminism as a part of their online image or personal brand.
• TikTok said only a few individuals can approve heating in the US and the promoted videos take up less than 0.002% of user feeds.
• The company posted job listings for staff for a series of order fulfillment centers in the US and is reportedly planning to start the new live shopping business before the end of the year.
• TikTok has faced criticism for transferring European user data to servers in the United States.
• The mobile app allows users to create short videos, which often feature music in the background and can be sped up, slowed down, or edited with a filter.

■ Watch endless amount of videos customized specifically for youA personalized video feed based on what you watch, like, and share. All you have to do is watch, engage with what you like, skip what you don’t, and you’ll find an endless stream of short videos that feel personalized just for you. On TikTok, short-form videos are exciting, spontaneous, and genuine.

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• Recruiters had been using the app to help fill quotas, and some continue to maintain a level of engagement through their personal accounts.
• In 2019, TikTok announced the #EduTok Mentorship program, a live workshop series in the Indian states of Bihar, Andhra Pradesh, Telangana, Rajasthan, Jharkhand and Jammu inspired by the hashtag #EduTok, in which video creators present factually for purposes of education.
• While TikTok remains accessible to users in most countries, a minority of countries (including India and Afghanistan) have implemented full or partial bans.
• The Financial Times reported that TikTok will launch a video gaming channel, but the report was denied in a statement to Digiday, with TikTok instead aiming to be a social hub for the gaming community.
• Its parent company, Beijing-based ByteDance, is owned by founders and Chinese investors, other global investors, and employees.
• On 6 November 2024, Canada ordered TikTok to shut down its offices and subsidiary company (TikTok Technology Canada, Inc.) in the country due to national security concerns, but access to the app was not banned.

She noted that the company was potentially violating the GDPR which requires the company to provide different services and different protections for children. In July 2025, the DPC ruhtinas opened a new investigation into TikTok for unauthorized transfers of user data to China. In April 2025, the Ireland DPC fined TikTok over €500 million for illegally sending European user data to China. In September 2023, the DPC fined TikTok €345 million for violations of the General Data Protection Regulation (GDPR) vis-à-vis the mishandling of children data.
Competition from TikTok prompted Instagram, which is owned by Facebook, to spend $120 million as of 2022 to entice more content creators to its Reels service, although engagement level remained low. Although the size of its user base falls short of that of Facebook, Instagram, or YouTube, TikTok reached 1 billion active monthly users faster than any of them. In 2019, media outlets cited TikTok as the 7th-most-downloaded mobile app of the decade, from 2010 to 2019. After merging with musical.ly in August, downloads increased and TikTok became the most downloaded app in the US in October 2018, which musical.ly had done once before. On September 14, 2025, the Wall Street Journal reported the US and China have reached the «framework of a deal» for the US operations of TikTok to be sold to a consortium of investors in the US including close Trump ally Larry Ellison of Oracle. While Beijing preferred TikTok remain under ByteDance’s control, the sale could happen through a competitive process or with US government involvement.

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Content promoting cosmetic surgery is popular on TikTok and has spawned several viral trends on the platform. Women’s apparel can roughly be divided into petite, straight, and plus sizes, leaving gaps in between. «Midsize» fashion gained greater exposure on TikTok after many creators opened up about not able to find clothing sizes that fit them well. These hashtags have amassed 4.6 million and 4.5 million posts, respectively, according to the platform. Food-related content on TikTok is often categorized under the hashtags #TikTokFood and #FoodTok. In 2023, a trend emerged where streamers acted as if they were video-game characters following prompts from their viewers.
In Malaysia, TikTok is used by some users to engage in hate speech against race and religion especially mentioning the 13 May incident after the 2022 election. TikTok has since released tougher parental controls to filter out inappropriate content and to ensure they can provide sufficient protection and security. As TikTok has gained popularity among young children, and the popularity of extremist and hateful content is growing, calls for tighter restrictions on their flexible boundaries have been made. Some videos were shown to expressly promote Holocaust denial and told viewers to take up arms and fight in the name of white supremacy and the swastika.

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In September 2021, the Ireland Data Protection Commission (DPC) launched investigations into TikTok concerning the protection of minors’ data and transfers of personal data to China. The US Attorney for the Eastern District of Virginia reportedly subpoenaed information from ByteDance regarding its surveillance of journalists on TikTok. In December 2022, ByteDance confirmed after internal investigation that the data of two journalists and their close contacts had been accessed by its employees from China and the United States.

On 22 January 2026, US President Donald Trump and TikTok announced that the company had joined a joint venture, which will run as an independent entity while operate under defined safeguards that protect national security for US users. A new subsidiary, TikTok US Data Security Inc. (USDS), was created to manage user data, software code, back-end systems, and content moderation. In response to security concerns of the United States government, TikTok has been working to silo privileged user data within the United States under oversight from the US government or a third party such as Oracle. In June 2022, BuzzFeed News reported that leaked audio recordings of internal TikTok meetings reveal employees in China had access to overseas data, including a «master admin» who could see «everything». TikTok said it does not give information to China’s government and «US user data» is stored within the country with backups in Singapore. Lawmakers also «hammered» TikTok about whether consumer data could be turned over to the Chinese government through ByteDance, its parent company in China.

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In June 2022, TikTok introduced the ability to set a maximum uninterrupted screen time allowance, after which the app blocks off the ability to navigate the feed. Insomnia is considered a strong mediator between screen media time and mental health symptoms which implies that engaging in screen time pushes out adequate sleep and leads to decreased mental health. Their short attention spans posed a challenge for TikTok to pivot towards longer content formats.
TikTok’s own investigation found more than 12,000 fake accounts, including ones using additional languages such as English and Italian. In December 2023, BBC News reported that it had discovered nearly 800 fake TikTok accounts promoting Russian propaganda and disinformation. Tracking Exposed, a user data rights group, learned of what was likely a technical glitch that became exploited by pro-Russia posters.
On 23 January 2018, the TikTok app ranked first among free application downloads on app stores in Thailand and other countries. Employees have reported that multiple overlaps exist between TikTok and ByteDance in terms of personnel management and product development. Its parent company, Beijing-based ByteDance, is owned by founders and Chinese investors, other global investors, and employees. Many other countries limit TikTok’s use on government-issued devices for security or privacy reasons.
TikTok said only a few individuals can approve heating in the US and the promoted videos take up less than 0.002% of user feeds. NBC reported that videos using the hashtags ‘#plasticsurgery’ and ‘#lipfiller’ had amassed a combined 26 billion views on the platform. TikTok content creators used a specific audio on their videos while showing how their noses looked before and after having their rhinoplasty surgeries. In the article, it was noted that plastic surgeons were some of the earliest adopters of social media in the medical field and many had been recognized as influencers on the platform.