Comment Correlation still isn't causation (Score 2, Informative) 24
The problem isn't the phone itself it's overworked parents with low pay and no social support.
The abstract at least says that the account for socioeconomic factors but I'm not able to read the actual study past the abstract.
Also I guarantee that these exact same studies can be found for television, the internet and if you go back far enough you can find the 18th century equivalent of these studies for Penny dreadfuls.
Every time a new form of mass media or a new device for mass media shows up you can bet somebody is going to find a correlation between everything bad and if. Meanwhile we never actually do anything about things like child hunger or forcing kids to get up early to go to school when we have plenty of studies indicating the teenagers need more sleep and it needs to be later in the morning...