South Africa’s telecommunications investment accelerates digital infrastructure development, with major capital commitments supporting 5G, fibre, spectrum, data centres, broadband connectivity and broader digital-economy growth.
South Africa’s telecommunications sector is entering a new investment phase as operators increase spending on mobile networks, 5G, fibre connectivity and digital infrastructure. Rising data consumption, enterprise digitisation and demand for reliable broadband are increasing the need for network capacity, while regulatory developments are creating a framework for future spectrum use and next-generation technologies. The sector is also becoming increasingly connected with data centres, cloud computing, artificial intelligence and other digital services.
At the 6th South Africa Investment Conference in March 2026, telecommunications emerged as a major component of the country’s investment pipeline. InvestSA reported that MTN committed R21.8 billion (approximately US$1.33 billion), placing the operator among the largest company-led investment commitments announced at the conference. The broader conference recorded R889.8 billion (approximately US$54.2 billion) in pledges across 81 projects.
Leading Companies Driving Telecommunications Investment in South Africa
MTN Expands Telecommunications Investment Across South Africa
MTN is expanding network capacity as mobile data demand and 5G adoption increase. At the 2026 South Africa Investment Conference, MTN committed R21.8 billion (approximately US$1.33 billion) to telecommunications infrastructure. Its broader 2026 strategy also includes significant network and digital-infrastructure spending. MTN Group invested almost R20 billion in capex during H1 2026 across network expansion, home connectivity and IT modernisation. MTN South Africa recorded a 2.3% increase in service revenue in Q2 2026.
Vodacom Accelerates Fibre and Broadband Infrastructure
Vodacom is strengthening fixed and mobile connectivity through its 30% investment in Maziv, which includes Vumatel and Dark Fibre Africa. The transaction involved approximately R4.9 billion (US$299 million) in fibre assets and R7.9 billion (US$481 million) in cash. Maziv’s FTTH footprint exceeded 2.8 million homes passed, creating additional capacity for residential, enterprise and mobile-network connectivity. Vodacom’s FY2026 presentation also indicates plans to expand fibre access to one million additional homes over five years.
Telkom Expands Mobile and Fibre Capital Investment
Telkom is allocating capital toward mobile and fibre infrastructure as data usage increases. In FY2026, group capex rose 10.4% to R6.43 billion (US$392 million), with investment primarily directed toward mobile and fibre. Telkom’s mobile subscriber base surpassed 25 million, while Openserve increased fibre homes passed by 11.6% to 1.54 million and homes connected by 17.7% to 817,540. Mobile data traffic increased 18.5% to 2,084 petabytes, highlighting growing network-capacity requirements.
Rain and Huawei Scale 5G Network Infrastructure
Rain is expanding South Africa’s 5G infrastructure through a sub-1 GHz Massive MIMO deployment with Huawei. The companies announced a multi-thousand-site commercial network, with large-scale deployment already achieved in major cities. According to Huawei, the technology improved uplink coverage by 5 dB, downlink coverage by 3 dB, and increased network capacity by up to three times compared with conventional 4T4R equipment.
Together, these investments demonstrate growing capital deployment across mobile access, fibre, backhaul and advanced 5G infrastructure.
Market Statistics
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Mobile connections: South Africa had approximately 127 million mobile cellular connections in 2025, reflecting the widespread use of mobile communications.
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Internet users: The country had around 51.7 million internet users, representing approximately 79.6% internet penetration.
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Fixed broadband: Fixed broadband subscriptions reached about 3.26 million in 2025, with the segment growing 19.3% year over year.
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Fibre broadband: FTTH/B subscriptions reached approximately 3.01 million, increasing about 22% year over year, highlighting continued fibre expansion.
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5G and spectrum: ICASA plans to increase broadband spectrum available for assignment from 850 MHz to at least 18,588 MHz by 2030, supporting future 5G and next-generation mobile connectivity.
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The South African Telecom Market, valued at USD 12.72 billion in 2025, is growing at a CAGR of 4.60% to reach approximately USD 19.94 billion by 2035.
Spectrum Reforms Create New Opportunities for Telecom Operators
Spectrum availability is fundamental to mobile-network expansion because radio frequencies determine network capacity, coverage and data throughput. South Africa’s regulatory framework is therefore closely linked to telecommunications investment. In July 2026, ICASA published the National Radio Frequency Plan (NRFP) 2026, describing it as the blueprint for spectrum utilisation, innovation and digital connectivity.
ICASA also published the IMT Roadmap 2026, providing a five-to-ten-year framework for spectrum planning and assignment for current and future mobile broadband technologies, including IMT-2030. The Authority aims to increase broadband spectrum available for assignment from 850 MHz currently to at least 18,588 MHz by 2030, while proposed measures could increase high-demand spectrum availability by approximately 215%.
The investment implications are significant. Additional spectrum can support 5G deployment, fixed wireless access, network densification and higher-capacity broadband services, while improving the economics of network expansion. South Africa’s earlier spectrum process generated R14.48 billion (approximately US$0.88 billion) in 2022, demonstrating the financial value attached to high-demand frequencies.
Greater regulatory clarity can therefore influence operators’ capex planning, radio-access-network procurement, fibre backhaul requirements and long-term infrastructure investment, creating opportunities across mobile networks, equipment, connectivity and digital services.
Fibre and Broadband Infrastructure Strengthen Digital Connectivity
Fibre infrastructure is becoming a critical component of South Africa’s digital capital base because it provides high-capacity, low-latency connectivity for households, enterprises, mobile towers, cloud platforms and data centres. Its expansion also enables mobile operators to increase network capacity without relying only on additional radio sites.
Vodacom’s investment in Maziv demonstrates the scale of private-sector fibre deployment. Vodacom contributed R4.9 billion (approximately US$299 million) in fibre assets and R7.9 billion (US$481 million) in cash for a 30% interest in Maziv. At implementation, Maziv’s fibre-to-the-home network had passed more than 2.8 million homes, creating a substantial fixed-broadband infrastructure base.
Fibre is particularly important for 5G network densification, as high-frequency radio networks require extensive fibre backhaul to transport large volumes of data between cell sites and core networks. Investment therefore extends across FTTH, fibre-to-the-business, metro networks and enterprise connectivity.
Telkom’s Openserve also reached 1.54 million fibre homes passed in FY2026, demonstrating continued fixed-network expansion. These investments strengthen fixed-capital formation while creating opportunities for infrastructure funds, network operators, engineering companies and digital-service providers.
Data Centres and Cloud Infrastructure Expand the Digital Economy
South Africa is seeing growing investment in data centres and cloud infrastructure as businesses increasingly rely on artificial intelligence, cloud computing, digital platforms and data-intensive services. These facilities require reliable electricity, high-speed fibre connections and strong network infrastructure to process and store growing volumes of data.
The scale of development is increasing. Teraco’s data-centre platform has reached 189 MW of critical IT power capacity, while its JB4 facility in Johannesburg has expanded to 50 MW, including a recent 30 MW addition. The facility also provides multiple fibre connections, supporting connectivity between businesses, cloud providers and other digital platforms.
Cloud infrastructure is also attracting major investment. Microsoft has committed R5.4 billion (approximately US$0.297 billion) to expand its cloud and artificial-intelligence infrastructure in South Africa through 2027. This follows approximately R20.4 billion (US$1.12 billion) invested in enterprise-grade data centres in Johannesburg and Cape Town over the preceding three years.
The expansion of these facilities supports financial services, e-commerce, software, digital payments and business services. It also creates demand for fibre networks, power systems, cybersecurity, cooling technology and cloud connectivity, making digital infrastructure increasingly important to South Africa’s wider economy.
Leading Telecommunication Companies in South Africa
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MTN
MTN is expanding South Africa’s telecommunications infrastructure through investment in mobile networks, 4G, 5G and digital connectivity. The company committed almost R22 billion (approximately US$1.34 billion) over three years for local capital infrastructure. Its investments focus on increasing network capacity, improving coverage, strengthening resilience and supporting South Africa’s digital transformation.
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Vodacom
Vodacom is strengthening South Africa’s mobile and fibre infrastructure through network modernisation and broadband expansion. Its investment in Maziv included approximately R5 billion (US$0.29 billion) in fibre assets and R8 billion (US$ 0.47 billion) in cash for a 30% stake. The strategy supports additional fibre deployment, enterprise connectivity and broader digital infrastructure development.
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Telkom
Telkom is expanding South Africa’s telecommunications ecosystem through mobile, fibre and broadband infrastructure. Its FY2026 results reported R44.5 billion (US$2.62 billion) in revenue and a mobile subscriber base of 25 million. Continued investment in data-led services and fixed connectivity supports enterprise digitalisation, broadband access and the development of national digital infrastructure.
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Cell C
Cell C is pursuing a capital-efficient telecommunications strategy based on partnerships, network sharing and wholesale infrastructure. Its FY2026 results showed approximately 1.3 million additional subscribers, while data traffic increased 47%. The company’s capex-light model allows it to expand connectivity while controlling infrastructure expenditure and developing consumer, enterprise and wholesale services.
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Rain
Rain focuses on mobile broadband and next-generation 5G connectivity across South Africa. Its national network uses spectrum across 700 MHz, 1800 MHz, 2600 MHz and 3600 MHz bands, supporting coverage and capacity. The company has also deployed Standalone 5G and low-band Massive MIMO technologies to strengthen high-speed broadband and connected-device infrastructure.
Conclusion
South Africa’s telecommunications sector is becoming an increasingly important component of the country’s digital infrastructure and investment landscape. Rising investment in mobile networks, 5G, fibre, spectrum-enabled infrastructure and data centres is expanding the capacity required for a more connected economy. Regulatory developments and large corporate commitments are creating a framework for continued infrastructure deployment and private-sector participation. The sector also generates opportunities across network equipment, engineering, cloud computing, digital services and infrastructure finance. As telecommunications infrastructure expands, its role will extend beyond connectivity, supporting productivity, enterprise digitisation and investment across South Africa’s wider technology and business ecosystem.