Phone chat refers to a conversation that takes place over the phone, usually between two people who are not in close physical proximity. It can involve catching up with an old friend or having a casual conversation with someone you just met. Phone chats can be used for various purposes such as making new connections, networking, or even conducting business deals. The term "phone chat" is also sometimes used to refer to phone sex, which involves sexual talk and explicit conversations over the phone between two consenting adults.