In this episode of the TechCentral podcast, we chat to MTN South Africa chief technology and information officer Giovanni Chiarelli. It's a fascinating discussion about the technological challenges of running a modern mobile network. The discussion looks at MTN's huge network investment in recent years - in excess of R10bn/year - and where that money is going exactly. Download or stream the podcast to find out more about MTN's fibre-to-the-home plans, why Chiarelli thinks it might make more sense to switch off the 3G network rather than the 2G one, and what's ahead for consumers with 4G+ and later 5G technologies. Chiarelli also talks about the looming spectrum crunch and how MTN might be forced to deal with it. It's a great interview - don't miss it!