https://www.cnbc.com/2018/01/07/jana-and-calstrs-apple-should-address-iphone-addiction-among-youths.html >Apple shareholders Jana Partners and the California State Teachers' Retirement System are urging the smartphone maker to take steps to address what they say is a growing problem of young people getting addicted to Apple's iPhones, Jana partner Charles Penner said. >Jana, a leading activist shareholder, and CalSTRS, one of the nation's largest public pension plans, delivered a letter to Apple on Saturday asking the company to consider developing software that would allow parents to limit children's phone use, the Wall Street Journal reported earlier on Sunday.