(Telecompaper) Airtel Africa said its revenues increased by 6.9 percent to USD 851 million in the first three months to 30 June from USD 796 million in the same period of 2019 with constant currency revenue growth of 13 percent, which was partially offset by devaluation mainly in Nigeria (6.9%), Zambia (28.3%) and Kenya (4.4%). The revenue growth was largely driven by the growth of the customer base by 11.8 percent to 111.5 million and ARPU growth of 1.6 percent in constant currency.