MTN's $10 billion battle with the Nigerian authorities could increase the risk to SA's financial system depending on the outcome, says the South African Reserve Bank.

MTN South Africa made more average revenue per user in the quarter ended 30 September, despite losing 705 000 customers.

The group added 2.5 million new subscribers in the third quarter, boosted by strong performances in Nigeria and Ghana, while MTN SA lost customers.

The Nigerian central bank's demand for MTN to repatriate $8.1 billion does not bode well for the country's image as a favourable investment destination, analysts agree.

Nigeria's central bank governor says the $8.1 billion it is demanding from MTN could be decreased.

The Central Bank of Nigeria says it is reviewing information with a view to reaching an equitable resolution to the $8.1 billion MTN repatriation issue.

Nigeria's $10 billion demand makes MTN's planned IPO in the country pretty challenging and awkward, says group CFO Ralph Mupita.

The MTN Group is hit with a $2 billion Nigerian tax bill, marking the operator's latest skirmish with authorities in its most lucrative market.

The mobile operator challenges the Nigerian central bank over allegations that it breached the country's foreign exchange regulations.

The company reports revenue growth, driven by voice and the expansion of data and digital services.

The telco has yet to file its application for an initial public offering, a share listing that could value the business at around $5 billion.

The telco says a planned listing in Ghana is expected to launch in late May, while it has come to an agreement over a fees dispute in Benin.