The duration for which T-Mobile retains customer call history data varies depending on the type of record and the purpose for which it is stored. Call details, including phone numbers, dates, times, and call durations, are typically maintained for a defined period to comply with legal and regulatory requirements and for internal business needs, such as billing and customer service. The specific retention period is subject to change based on evolving legal mandates and T-Mobile’s internal policies.
Maintaining records of telecommunications activity is essential for several reasons. It enables accurate billing, provides a means to resolve customer disputes, and allows T-Mobile to cooperate with law enforcement agencies in investigations. Historically, telecommunication companies have been required to retain certain data to assist in national security matters and to support legal proceedings, contributing to public safety and law enforcement efforts.