Japan's KDDI, Sumitomo Corp to invest $2 bln in Myanmar telecoms." Although Tanzania has long had a competitive mobile market, the entry of Vietnamese owned Viettel, operating under the brand Halotel, in October 2015 caused disruption. It launched a 3G only service on the back of extensive investment in a fiber optic backbone emphasizing that it was possible to bridge the Internet gap in a short period of time.156 Halotel's entry triggered a price war with a 500 MB mobile Internet package dropping 70% between 2015 and 2016, resulting in affordability reaching the threshold of less than 5% of GNI.