Phone billing records typically contain information about calls made and received, including the date, time, duration, and the numbers involved. These records also indicate data usage. However, the actual content of SMS or multimedia messages is generally not included in standard phone billing records. These records primarily track metadata, not the substance of communications. An example would be seeing a record indicating a text was sent to a particular number at a specific time, but the content of that text is not present.
Access to communication metadata serves multiple functions, from network management and billing accuracy to assisting law enforcement with investigations under proper legal authorization. Knowing the parties and timing of communication, without the content, allows for analysis of communication patterns. This metadata collection is critical for service providers to maintain their operations. Historically, this data was essential for calculating long-distance charges and understanding network load, contributing to the evolution of telecommunications pricing models.