MTN’s brand value has grown by 8% over the last year to R44.2-billion, maintaining its leadership as South Africa’s most valuable brand, according to the latest report by Brand Finance, the independent brand valuation and strategy consultancy. MTN’s brand value grew primarily because of customers spending more on data services, consistent with a global trend of mobile phones being used to transmit more data at the expense of traditional voice traffic. As a result, MTN’s overall revenue grew by 7.2% last year, with data revenue growing by 34.2%. David Haigh, CEO of Brand Finance, commented: “MTN is…