Telecommunication firms in Tanzania are increasingly shifting their 'battles' to data as each of them seeks to get a bigger piece of the 'cake' that comes with Tanzania's digital revolution. With a penetration rate of 43 percent, Tanzania's internet users stood at 23.1423 million as of December 2018, Tanzania Communications Regulatory Authority (TCRA) figures show. At 22.28 million, mobile wireless accounted for the lion's share of subscribers. With TCRA quoting the total number of voice subscribers at 43.749 million as of June 2019, the telecommunication firms see data as one of the income streams that are yet to be fully tapped. Available statistics show that mobile data, along with messaging and mobile money, are the fastest-growing revenue income streams for telecommunication firms. For instance, Vodacom Tanzania's mobile voice revenue dropped by 1.1 percent during the year to March 31, 2019, compared to the year to March 31, 2018.