Who sings payphone?
It has a metaphor, but not a simile. The whole theme of the song is a metaphor. Being stuck at a payphone, trying to reach her, but not having any money because he spent it on her is a metaphor for being stuck in the past, not able to reach her, and him being emotionally spent. A simile is a "like" or "as" comparison, and Payphone doesn't have a simile in the lyrics.