The U.S. Department of State is seeking proposals for mobile telephone and data services for the U.S. Embassy in Luanda, Angola, and Sao Tome and Principe. The selected service provider must offer 4G network coverage and a range of telecommunications services, including mobile data, voice, SMS, and international calling, available on both prepaid and postpaid plans. This contract, anticipated to be a firm fixed price Indefinite Delivery Indefinite Quantity type, will cover a base year with four optional one-year extensions, and all interested vendors must be registered in the SAM database prior to submission. For inquiries, potential offerors can contact Scott Stahl at STAHLSA@STATE.GOV or Walter Pinto at PINTOW@STATE.GOV.