I've just been on twitter and seen multiple people reposting a video of two police officers apparently threatening to arrest a child for viewing a post on social media. The video is heavily edited.
The police have issued a statement
https://www.westmidlands.police.uk/news/west-midlands/news/news/2025/september/disinformation-circulating-around-walsall-investigation-into-indecent-messages/
"We are investigating after a complaint from a member of the public that a fake social media account had been created in their name and had been used to send indecent messages.
The offence being investigated is one of malicious communications - sending indecent or grossly offensive communication to cause distress or anxiety.
The messages are of an incredibly serious nature and have caused serious concern for the victim."
This is why they wanted to confiscate the phone before evidence could be destroyed.
While I agree that there have been some stupid arrests in the past, this isn't one of them.