The pressure should obviously be applied on the underage children with the Apple products, or better yet on Apple. Perhaps the children should be punished and have their iPhones taken away and replaced with budget android phones or flip phones.

This is good in the long run since the behavior they were engaging in puts them at odds with nearly half the population. Not only is it anti-social behavior, it's mind numbingly stupid and likely to backfire in ways that make their lives worse.

~43% of the cell phones out there in the US are Android phones. To follow their conviction against Android at all convincingly and thoroughly, they would be missing out on a lifetime of opportunities and would live a significantly diminished existence.

iPhone is not even close to being a dominant enough platform to be able to enforce this kind of social pressure against anyone but people significantly under the age of 18. Shame them, make sure they feel bad and spoiled (they should feel spoiled for being a child with an iphone), and watch them grow out up to be pro-social adults.