Your son needs to mature. He needs to start ignoring what others do think about him and start to actively resisting peer pressure of others. You can either for

Your son needs to mature. He needs to start ignoring what others do think about him and start to actively resisting peer pressure of others. You can either force him the Android and drive his mental development towards a person who is not afraid to to have different opinion than the opinion of the group OR you can let him have iPhone and validate that being just another ant in the anthill is best approach to life.