viettel tanzania public limited company, trading as halotel,is a mobile communications company, providing voice, messaging, data and communication services in tanzania. it is owned by viettel global jsc which is the state-owned investment company from vietnam investing in the telecommunications market in several countries worldwide. it has invested up to $1 billion into the tanzania's telecommunications market. the company was the first company in tanzania allowed to lay its own fiber optic cable and has placed over 18,000 km of optic fibers, providing all 26 regions of tanzania services.