Youth mental health and smartphones July 14, 2019July 14, 2019 / dieterpelz Letter from JANA Partners & CalSTRS to Apple, Inc. A very worthwhile read for any parents of children with smartphones. Share this: Click to share on X (Opens in new window) X More Click to share on Facebook (Opens in new window) Facebook Click to share on WhatsApp (Opens in new window) WhatsApp Like Loading... Related