This is a pre-solicitation notice for a firm fixed-price contract to provide mobile phone services for the U.S. Government in Libreville, Gabon. The anticipated performance period is a base year with four one-year options and a potential six-month extension. The Government may award the contract based on the initial offer without discussion, and a pre-quotation conference will be held. All contractors must be registered in SAM.gov at the time of quote submission, and quotes must be submitted electronically with technical and financial proposals in separate files. The place of performance is the U.S. Embassy in Libreville, Gabon.