U.S. Department of Justice United States Attorney Southern District of New York The Silvio J. Mono Building One Saint Andrew's Plaza Neu• York. Neu• York 10007 October 22, 2019 VIA EMAIL T-Mobile USA, Inc. Law Enforcement Relations 4 Sylvan Way Parsi an , NJ 07504 Re: Grand Jury Subpoena Please be advised that the accompanying grand jury subpoena has been issued in connection with an official criminal investigation of a suspected felony being conducted by a federal grand July. The Government hereby requests that you voluntarily refrain from disclosing the existence of the subpoena to any third party. While you are under no obligation to comply with our request, we are requesting you not to make any disclosure in order to preserve the confidentiality of the investigation and because disclosure of the existence of this investigation might interfere with and impede the investigation. If you intend to disclose the existence of this Grand Jury Subpoena request to a third party, please let me know before making any such disclosure. Thank you for your cooperation in this matter. Very truly yours, GE a FFREY S. BERMAN By: Assistant United States Attorney Southern District of New York EFTA00153347