21 May 2015, Mahanagar Telephone (Mauritius) Limited (MTML), unit of India’s Mahanagar Telephone Nigam Limited (MTNL), has launched 4G (LTE) services in Mauritius through its Chile-branded service using equipment supplied by Huawei Technologies and ZTE Corporation. MTML is also upgrading its 3G network to 3.5G/HSPA+ technology all across the island in order to provide its subscribers with download speeds of up to 21Mbps. Launching of 4G and upgrading its 3G network to 3.5G/HSPA+ technology nationwide will require an additional investment of approximately MUR400 million (USD11.36 million), thus taking total investments of MTML in Mauritius to MUR1.5 billion so far. The operator is also planning to upgrade its infrastructure by deploying 100 additional base transceiver stations (BTS) in order to improve coverage.