fanboy
noun [ C ] uk/ˈfæn.bɔɪ/ us/ˈfæn.bɔɪ/
informal（年轻的）男…迷（影迷、音乐迷、技术迷，等等）
a boy or young man who is a fan of someone or something such as an actor, a type of music, a piece of technology, etc.
In fact, people who sell cell phones for a living are rarely cell phone fanboys. 事实上，以出售手机谋生的人很少自己就是手机迷。