Introduction

The Springboks vs All Blacks Ellis Park Test Match may dominate sports headlines, but in telecoms, another battle is unfolding: airtime vs data. Buying airtime in South Africa no longer means what it once did. Increasingly, airtime is converted into data, spent on WhatsApp, and stretched as household budgets tighten.

South Africa Is Becoming a Data‑First Country

Evidence from ICASA, MTN, and Vodacom shows this is not a temporary change. It is a structural transformation across the telecommunications industry.

• Prepaid mobile data revenue grew 7.7% in 2025, reaching R42.1 billion.
• Prepaid voice revenue fell 7.6%, generating R19.1 billion.
• Traditional SMS collapsed by 49.2%, producing just R276.6 million.

Applications like WhatsApp, Telegram, and Signal have replaced ordinary calls and texts, while economic pressure pushes consumers toward data bundles.

MTN Customers Are Using More Data

MTN’s 2026 results confirm the trend:

• Voice revenue declined 10.2% in six months.
• Data revenue rose 4%, with traffic surging 27.7%.
• Prepaid subscribers now consume 4.9GB monthly (up 23.6%).
• Postpaid usage jumped to 32.3GB monthly (up 32%).

MTN described this as a structural shift: customers are moving away from out‑of‑bundle calls toward data bundles and digital platforms.

Voice Revenue Is Falling, But Calls Continue

ICASA found that national mobile calling minutes increased 21.5% in 2025, even while revenue declined. Consumers are making more calls, but using bundled minutes and cheaper promotions. The conclusion: voice calls are still used, but they no longer drive revenue.

Vodacom’s Long‑Term Transformation

Vodacom’s history shows the shift began years ago:

• In 2012, voice generated 80% of combined voice/data revenue.
• By 2018, data overtook voice for the first time.
• Between 2021 and 2026, voice traffic fell 12.63%, from 68.5 billion minutes to 59.8 billion.

Vodacom provides the long‑term picture, while MTN shows the pace of change today.

Why Data Is Winning

Data bundles offer versatility: messaging, voice notes, video calls, social media, banking, education, and entertainment. Traditional airtime offers only calls.

Other factors:

• Spam calls eroded trust in ordinary phone calls.
• ICASA’s termination rate cuts reduced operator revenue.
• Smartphones and apps made internet communication cheaper and more flexible.

Airtime Is Changing, Not Disappearing

Many prepaid customers still buy airtime before converting it into data. MTN reported prepaid cash recharges rose 9.4% (excluding airtime‑advance repayments). Airtime remains relevant, but its role is shifting: it is now the gateway to data.

Not Everyone Can Abandon Traditional Calls

Despite 99.5% 4G coverage and 58% 5G coverage, affordability remains a barrier. A 2GB data basket costs R152, while entry‑level broadband is R309. Not all consumers can afford smartphones or stay online consistently. Traditional calls remain vital when data is unavailable.

Data Is Becoming South Africa’s Communication Currency

The evidence is clear: South Africans are not communicating less — they are communicating differently. Airtime still matters, but increasingly as a doorway to data. Mobile networks are diversifying into fibre, 5G, and digital services.

For years, airtime powered South Africa’s mobile revolution. Now, data is the country’s real communication currency.

Is Traditional Airtime Dying in South Africa? Why Data and WhatsApp Are Taking Over

Introduction

The Springboks vs All Blacks Ellis Park Test Match may dominate sports headlines, but in telecoms, another battle is unfolding: airtime vs data. Buying airtime in South Africa no longer means what it once did. Increasingly, airtime is converted into data, spent on WhatsApp, and stretched as household budgets tighten.

South Africa Is Becoming a Data‑First Country

Evidence from ICASA, MTN, and Vodacom shows this is not a temporary change. It is a structural transformation across the telecommunications industry.

• Prepaid mobile data revenue grew 7.7% in 2025, reaching R42.1 billion.
• Prepaid voice revenue fell 7.6%, generating R19.1 billion.
• Traditional SMS collapsed by 49.2%, producing just R276.6 million.

Applications like WhatsApp, Telegram, and Signal have replaced ordinary calls and texts, while economic pressure pushes consumers toward data bundles.

MTN Customers Are Using More Data

MTN’s 2026 results confirm the trend:

• Voice revenue declined 10.2% in six months.
• Data revenue rose 4%, with traffic surging 27.7%.
• Prepaid subscribers now consume 4.9GB monthly (up 23.6%).
• Postpaid usage jumped to 32.3GB monthly (up 32%).

MTN described this as a structural shift: customers are moving away from out‑of‑bundle calls toward data bundles and digital platforms.

Voice Revenue Is Falling, But Calls Continue

ICASA found that national mobile calling minutes increased 21.5% in 2025, even while revenue declined. Consumers are making more calls, but using bundled minutes and cheaper promotions. The conclusion: voice calls are still used, but they no longer drive revenue.

Vodacom’s Long‑Term Transformation

Vodacom’s history shows the shift began years ago:

• In 2012, voice generated 80% of combined voice/data revenue.
• By 2018, data overtook voice for the first time.
• Between 2021 and 2026, voice traffic fell 12.63%, from 68.5 billion minutes to 59.8 billion.

Vodacom provides the long‑term picture, while MTN shows the pace of change today.

Why Data Is Winning

Data bundles offer versatility: messaging, voice notes, video calls, social media, banking, education, and entertainment. Traditional airtime offers only calls.

Other factors:

• Spam calls eroded trust in ordinary phone calls.
• ICASA’s termination rate cuts reduced operator revenue.
• Smartphones and apps made internet communication cheaper and more flexible.

Airtime Is Changing, Not Disappearing

Many prepaid customers still buy airtime before converting it into data. MTN reported prepaid cash recharges rose 9.4% (excluding airtime‑advance repayments). Airtime remains relevant, but its role is shifting: it is now the gateway to data.

Not Everyone Can Abandon Traditional Calls

Despite 99.5% 4G coverage and 58% 5G coverage, affordability remains a barrier. A 2GB data basket costs R152, while entry‑level broadband is R309. Not all consumers can afford smartphones or stay online consistently. Traditional calls remain vital when data is unavailable.

Data Is Becoming South Africa’s Communication Currency

The evidence is clear: South Africans are not communicating less — they are communicating differently. Airtime still matters, but increasingly as a doorway to data. Mobile networks are diversifying into fibre, 5G, and digital services.

For years, airtime powered South Africa’s mobile revolution. Now, data is the country’s real communication currency.