my iPhone does this just fine - and has for at least a decade every once in a great while...it appends a bunch of duplicate entries for someone (observationall

my iPhone does this just fine - and has for at least a decade every once in a great while...it appends a bunch of duplicate entries for someone (observationally, it's only when they've made a change on one of the social networks I used to sync via) but merging contacts is pretty simple