TikTok is to be banned in the US from Sunday if it is not sold by its Chinese parent company, the Supreme Court has ruled.

However, President Joe Biden has said he will not enforce the ban for the few remaining hours he is in office, leaving it up to Donald Trump to decide what to do when he enters the White House on Monday.

After the Supreme Court ruling, where the judges voted 9-0 in favour of the ban, the White House released a statement saying TikTok should remain available to Americans.

“TikTok should remain available to Americans, but simply under American ownership or other ownership that addresses the national security concerns identified by Congress in developing this law,” the White House said in a statement.

Analysis: America flinches as TikTok prepares to ‘go dark’ – will Trump save the day?

The US’s top judges were deciding whether to overturn the ban after hearing appeals from TikTok creators and its lawyers.

US officials banned the app over concerns its parent company could give data on American citizens to the Chinese government. TikTok’s owners Bytedance have repeatedly said they won’t sell the social media platform.

President-elect Donald Trump also tried to get the ban delayed, so he could make a decision on it once he was in office.

However, the Supreme Court has decided to stick with the original ban.

Now, one day before Mr Trump returns to the White House, the social media app used by 170 million Americans will be banned.

What happens on Sunday?

On Sunday, a few things could happen, especially now President Biden has said he will not enforce the ban.

There could be a quick beheading, with TikTok itself as the executioner.

There are reports the company will pull the plug for US users. When they attempt to open the app, people will see a pop-up message directing them to a website with information about the ban, Reuters is reporting.

At a Supreme Court hearing last week, TikTok’s lawyer said the app would “go dark” in the US if the ban came into force.

Although there are a lot of American TikTok users, more than 1.5 billion people use TikTok worldwide, so the company could well decide it can manage without its US influencers.

If Mr Trump decides to enforce the ban, there could be a slow, painful death for TikTok in the US, where companies including Apple and Google take it off their app stores.

That will mean no new users can download the app and there won’t be any updates.

The app will slowly get clunkier and buggier and US creators will start to disappear.

Or, the president-elect will work out a way of stopping the ban coming into force.

Will Donald Trump save US TikTok?

Mr Trump gets into the White House the day after the ban begins.

He is now a big fan of TikTok with more than 14.8 million followers. He even credited the app with helping him win back the presidency.

He may try to undermine the ban, but he does not have the power to overturn it.

He could, however, say he won’t enforce it, and promise app store hosts such as Apple and Google they will not be prosecuted if they keep the app on their platforms.

Whether those major companies will want to take the risk of ignoring a legal ban is up for debate, however.

After the Supreme Court’s decision, Mr Trump said he would make a decision quickly on how to deal with TikTok but he “must have time to review the situation”.

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What is happening to US TikTok users?

US TikTokers have already started to migrate, with many heading to the Chinese social media app Xiaohongshu, or RedNote, which topped the US App Store this week.

In just two days, more than 700,000 new users joined Xiaohongshu, according to Reuters.

“They’re trying to give a big middle finger to the establishment,” Chinese RedNote user William Wang told Sky News, after he watched the app flood with Americans using the hashtag #TikTokRefugees.

“They’re rebellious, they’re going to go on a very Chinese application, not just TikTok, an entirely Chinese ecosystem.”

For the users not heading to RedNote, the more traditional apps are waiting in the wings.

Read more:
What is RedNote?

Social media expert Adam Tinworth told Sky News the last time a major country banned TikTok, in India in 2020, it was not start-ups who benefitted – despite “a bunch” trying to fill the gap.

He said: “Because Meta had its Reels project ready and Alphabet had Shorts in YouTube, the vast majority of the activity on TikTok just gravitated towards those two platforms.”

When the ban was being discussed last year, Mr Trump said one of his issues was that the ban would send more people to Mark Zuckerberg’s apps.

“Without TikTok, you can make Facebook bigger, and I consider Facebook to be an enemy of the people,” he said in March 2024.

Donald Trump’s swearing-in ceremony is to be moved indoors due to cold weather forecast for Washington DC on Monday.

In a post on his Truth Social platform, the president-elect said he will now take the oath of office inside the Capitol Rotunda building, where dignitaries and guests will gather and prayers and other speeches will also be delivered.

It means the roughly 250,000 people who were ticketed to view the inauguration from around the Capitol grounds will no longer be able to do so.

Thousands more were expected to be in general admission areas or to line the route from the Capitol Building to the White House.

A guide to everything that will happen on 20 January

Mr Trump said the Capitol One Arena in Washington will open for a live viewing of his swearing-in ceremony and to host the Presidential Parade.

“I will join the crowd at Capital One, after my swearing-in,” he said.

Outlining the reasons for the inauguration to be moved in doors, he said: “The weather forecast for Washington DC, with the wind chill factor, could take temperatures into severe record lows.

“There is an Arctic blast sweeping the country. I don’t want to see people hurt, or injured, in any way.

“It is dangerous conditions for the tens of thousands of law enforcement, first responders, police K9s and even horses, and hundreds of thousands of supporters that will be outside for many hours on the 20th.

“In any event, if you decide to come, dress warmly.”

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Mr Trump wrote that all other events from his inauguration day will “remain the same”, including the Victory Rally at the Capital One Arena on Sunday and all three Inaugural Balls on Monday evening.

He added in his Truth Social post: “Everyone will be safe, everyone will be happy, and we will, together, MAKE AMERICA GREAT AGAIN!”

A spokesperson for the Joint Congressional Committee on Inaugural Ceremonies (JCCIC) said in a statement that it will “honour the request of the President-elect and his Presidential Inaugural Committee to move the 60th Inaugural Ceremonies inside the U.S. Capitol to the Rotunda”.

The last time a swearing-in ceremony was held indoors was Ronald Reagan’s second inauguration in 1985. Monday’s forecast suggests the lowest inauguration day temperatures since that day.

The National Weather Service is predicting the temperature to be around -6C at noon during the swearing-in, the coldest since Mr Reagan’s second inauguration saw temperatures plunge to -14C.

Barack Obama’s 2009 swearing-in was -2C. Adding to the bite, the wind is forecast to be 30 to 35mph.

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SpaceX’s gigantic Starship rocket has been “lost” just minutes into its seventh test flight.

The 400ft rocket – the biggest and most powerful in the world – soared from Boca Chica, south Texas, on Thursday around 4.40pm local time (10.40pm in the UK).

Just minutes after the rocket launched, its booster made its planned return to the ground and after momentarily hovering over the launchpad, it was spectacularly caught between two giant mechanical arms.

It’s the second time SpaceX has managed this particular feat.

However, as crowds cheered the booster’s return, the company said it had lost contact with Starship as the engines went out.

A host on SpaceX’s livestream soon confirmed: “At this point in time, we can confirm we did lose the ship.

“It looks like we lost contact a little under eight and a half minutes into the flight.”

“It was great to see a booster come down, but we are obviously bummed out about ship,” SpaceX spokesman Dan Huot said, adding it will take time to analyse the data and figure out what went wrong.

The last data received from Starship indicated an altitude of 90 miles and a velocity of 13,245 mph.

The flight was the seventh test run for the newly-upgraded Starship, and marked the next step in Elon Musk’s bid to build the first fully reusable spacecraft to get humans to Mars.

“Every Starship launch is one more step closer towards Mars,” he said on X before liftoff.

The Starship prototype had been modified significantly since its sixth test flight in November.

It was due to soar across the Gulf of Mexico on a near-loop around the world and SpaceX had packed it with dummy satellites, so it could practice releasing them.

Ahead of the launch, Musk’s company also upgraded the booster ‘catch’ tower after it was damaged during a previous test flight in November.

It’s not the first time a SpaceX Starship has been lost during a test flight. In November 2023, the company’s second attempt at launching its mega rocket ended abruptly when the vessel was lost following explosions.