Sao Tome and Principe

+239 · 1 operators

São Tomé and Príncipe, an island nation in the Gulf of Guinea consisting of two main islands with about 220,000 Portuguese-speaking people and São Tomé City as the capital, has its mobile market dominated by CST (Companhia Santomense de Telecomunicações, state-owned since the 1980s) and Unitel STP (granted second license in 2014, same group as Angola's Unitel), providing 3G/4G services. Market competition intensified after Unitel STP's entry, with notable price drops. USSD is used for balance checks, voucher PIN top-ups, and data bundle subscriptions—remaining a key communication entry point given the island's limited internet infrastructure.