It‘s easy enough to believe, but newer research says that the mere presence of a smartphone does not have a measurable effect on cognitive function.<p><a href="https://www.sciencedirect.com/science/article/abs/pii/S1053810020301975?dgcid=rss_sd_all" rel="nofollow">https://www.sciencedirect.com/science/article/abs/pii/S10538...</a>