During his first-ever appearance before a jury in February, Meta's chairman and chief executive, Mark Zuckerberg, relied on his company's longstanding policy of not allowing users under the age of 13 on any of its platforms.

When presented with internal research and documents showing that Meta knew young children were in fact using its platforms, Zuckerberg said he "always wished" for faster progress to identify users under 13. He insisted the company had reached the "right place over time".

While Google, as the owner of YouTube, was also a defendant in the case, most of the trial proceedings focused on Instagram and Meta.

Snap and TikTok were also initially defendants, but both companies reached undisclosed settlements with Kaley prior to trial.