Texas Code of Criminal Procedure - CRIM P Art. § 18B.254. Application or Order Not Required for Certain Searches

A peace officer is not required to file an application under Subchapter B or obtain an order under Subchapter C before the peace officer makes an otherwise lawful search, with or without a warrant, to determine the contents of a caller identification message, pager message, or voice message that is contained within the memory of an end-user's identification, paging, or answering device.