MTN offers the highest voice quality on calls in South Africa

• MTN indeed offers the highest voice quality on calls in South Africa, with an average Mean Opinion Score (MOS) of 4.51.
• The mobile call quality testing was conducted by MyBroadband Insights across South Africa, using Keysight Nemo equipment, and involved over 34,000 calls across 5 major mobile networks.
• MTN's strong Voice over LTE (VoLTE) support and network investment contributed to its high voice quality, with all networks meeting the required average MOS of at least 3 as per ICASA regulations.