Cell Phone

Cell Phones are a way of communication. It involves sending a voice to another cell phone. For demigods, this is an unconventional way of communicating because Monsters are attracted to Demigod voices being sent through the air using cell phones. As a result most Demigods instead communicate via Iris Messaging. Annabeth ownes a cell phone, being one of the only demigods to do so. In The Last Olympian, during the Battle of Manhattan, demigods would pick up a random cell phone from sleeping mortals to contact each other, and then discard it right away.