I'm not sure that's still correct. There was an uplift because of Covid and people having more spare time, but whatever more recent (2024 - 2025) sources I can find suggest the trend has reversed.
It's worth also considering demographics. If you narrow the focus to just younger generations (who, we can guess, are more addicted to smartphones) then the numbers look pretty bad. E.g.:
My son, who is away at college as a freshman this year, recently phoned me and apologized for calling me a bad dad and thanked me for not allowing him to have any devices in his bedroom after bedtime growing up, as it made him become a reader. He said he was amazed when he got to school and nobody else reads for pleasure.
It's worth also considering demographics. If you narrow the focus to just younger generations (who, we can guess, are more addicted to smartphones) then the numbers look pretty bad. E.g.:
https://www.theguardian.com/books/2024/nov/05/report-fall-in...