A burner phone is a prepaid mobile phone that is typically used for a short period of time. These phones are often inexpensive and can be discarded after use, making them popular for people who want to maintain privacy or avoid tracking. They do not require a long-term contract, allowing users to buy them without providing personal information. Many people use burner phones for various reasons, such as protecting their identity during sensitive communications or for temporary travel needs. They can also be useful in situations where a user wants to avoid unwanted calls or messages, providing a layer of anonymity in their communications.