The policy to cut off social media access for more than 2 million under-16s remains popular with Australians, while other countries look to follow suit

On the lawns of the prime minister’s Kirribilli residence in Sydney, overlooking the harbour, Anthony Albanese said he had never been prouder.

“This is a day in which my pride to be prime minister of Australia has never been greater. This is world-leading. This is Australia showing enough is enough,” he said as the country’s under-16s social media ban came into effect on Wednesday.

Platform fighting world-leading ban on grounds it contravenes implied freedom of political communication in constitution

• Will Australia’s social media ban survive a high court challenge?

Reddit has filed a challenge against Australia’s under-16s social media ban in the high court, lodging its case two days after implementing age restrictions on its website.

The company said in a Reddit post on Friday that while it agreed with protecting people under 16, the law “has the unfortunate effect of forcing intrusive and potentially insecure verification processes on adults as well as minors, isolating teens from the ability to engage in age-appropriate community experiences”.

Reddit said there was an “illogical patchwork” of platforms included in the ban.

Accounts held by users under 16 must be removed on apps that include TikTok, Facebook, Instagram, X, YouTube, Snapchat, Reddit, Kick, Twitch and Threads under ban

• How is Australia’s social media ban affecting you and your family?

• The social media ban explained: everything you need to know

Australia has enacted a world-first ban on social media for users aged under 16, causing millions of children and teenagers to lose access to their accounts.

Facebook, Instagram, Threads, X, YouTube, Snapchat, Reddit, Kick, Twitch and TikTok are expected to have taken steps from Wednesday to remove accounts held by users under 16 years of age in Australia, and prevent those teens from registering new accounts.