This is Not News. Many mobile networks offer content filtering, and it's often turned on by default until you turn it off (this is true in the UK at least). Ju

This is Not News. Many mobile networks offer content filtering, and it's often turned on by default until you turn it off (this is true in the UK at least). Just like the crappy filters you had to fight constantly at school these are extremely broad, badly curated lists of sites that they get from a third party. Three hasn't gone "let's block political and sex education sites", they just subscribe to a list made by another organisation, and often that list will mark a site as adult content purely because it has swear words on it.