South Africa’s Telco Landscape Undergoing Quality-Led Shift

Why It Matters

The quality‑led migration reshapes revenue dynamics, pushing incumbents to invest in network performance to retain high‑margin customers, and signals a more competitive, value‑focused telco landscape in South Africa.

Key Takeaways

• Vodacom market share fell 7 points to 36% in Q4 2025.
• MTN gained 2 points, reaching 31% after quality upgrades.
• Telkom and Cell C grew by 3 and 1 points, citing reliability.
• Capex shifted from backup power to network optimisation as load‑shedding eases.
• MTN invested $81 M; Telkom $313 M to boost consistent quality.

Pulse Analysis

The South African telecom sector is experiencing a structural pivot as consumers prioritize network reliability over price. Opensignal’s data shows that challenger operators have closed the quality gap with incumbents, enabling them to attract premium, data‑intensive users who previously stayed with Vodacom or MTN for coverage certainty. This trend is reflected in market‑share movements: Vodacom’s decline, MTN’s modest gain, and notable increases for Telkom and Cell C, all driven by measurable improvements in consistent quality metrics.

A key catalyst behind the shift is the reallocation of capital from emergency power solutions to network optimisation. After spending roughly $140 million on backup batteries to survive load‑shedding, operators are now investing in upgrades that enhance performance. MTN’s $81 million capex program and Telkom’s $313 million spend have delivered higher consistent quality scores, especially in high‑value metros like Cape Town and Tshwane. Cell C’s adoption of a virtual RAN on MTN’s infrastructure instantly lifted its service level, while Telkom’s regional expansion and data platforms have pushed its network availability to 99.99% and lifted its NPS to 72.3.

The business implications are profound. As reliability barriers fall, high‑margin subscribers are willing to switch providers, eroding the incumbents’ pricing power and forcing them to match or exceed the quality standards set by challengers. This quality‑led competition is likely to intensify capex cycles, spur further network sharing arrangements, and accelerate the rollout of advanced 5G services. For investors and industry watchers, the evolving dynamics signal a more contested market where service excellence, rather than price alone, will dictate future market leadership.