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.:
https://www.theguardian.com/books/2024/nov/05/report-fall-in...