If this was a legit study I'd expect an arXiv link or similar instead. Looking at their methodology, it's vague enough to be interpreted as 'ok' but really I'd expect ALOT more information on their sample distributions, weighting done to that sample for comparison, etc. It skimps on all the actual details. Seems like clickbaity junk to me, but I'm open to the idea that there is meaningful studies to be had here on this subject, or that this was done in a proper way but was communicated poorly.

  Reviews.org surveyed 1,000 Americans 18 years and older with a +/- 4% margin of error and a confidence level of 95%. The survey results were weighted to reflect characteristics of the United States population using available data from the US census. Respondents were asked to refer to their phone’s screen time report to determine the average number of times per day they check their phones, in addition to how much time in total they spend on their phones per day.