The U.S. Embassy in Lusaka, Zambia seeks quotations for mobile phone services for official Embassy use, including voice, data, SMS, voicemail, international calling and roaming, itemized billing, and 24/7 customer support for about 550 subscriptions on Government-furnished devices. The contractor must provide at least 90% network coverage within Zambia, with 5G/LTE or newer technology widely available in Lusaka, surrounding areas, and provincial capitals. The Embassy will award a single IDIQ contract with a one-year base period from 2 January 2027 to 1 January 2028 plus four one-year option periods, using best-value comparative evaluation. Quotations must include a completed C-SCRM Questionnaire or an acceptable third-party assessment such as ISO 27001 or SOC II, rated go/no-go, and offerors must be registered in SAM.gov when submitting. A pre-quotation conference will be held on 3 November 2026 at 10:00 a.m. local time at the U.S. Embassy Lusaka, with attendance requests due to Lusaka-procurement@state.gov by 28 October 2026.