Cheapest 1GB data
Best for low-volume monthly use or single-device top-ups.
Current dataset view
Telkom: Telkom Daily 1GB
Price: R23 | Validity: 1 Day | Approx. value: R23.00/GB
Which Network Has the Cheapest Data in South Africa?
The cheapest network depends on bundle size, validity period, public pricing, and how you actually use data. Use this guide to compare MTN, Vodacom, Telkom and Cell C by cost per GB, upfront price, and expiry rules before you buy.
Cheapest data quick comparison
This summary table ranks the visible non-social, non-night bundles in the DataCost dataset by cost per GB. It is a comparison aid, not a permanent cheapest-network claim or a promise that personalised operator offers are available to every SIM. For a broader starting point, use the compare data deals in South Africa homepage.
| Rank | Network | Bundle | Price | Validity | Cost per GB |
|---|---|---|---|---|---|
| 1 | Telkom | Telkom 40GB Prepaid | R189 | 30 Days | ~R4.73/GB |
| 2 | Telkom | Telkom 20GB Prepaid | R99 | 30 Days | ~R4.95/GB |
| 3 | Telkom | Telkom 10GB Monthly | R89 | 30 Days | ~R8.90/GB |
| 4 | Cell C | Cell C 30GB Monthly | R299 | 30 Days | ~R9.97/GB |
| 5 | Cell C | Cell C 20GB Monthly Recurring | R249 | 30 Days (Recurring) | ~R12.45/GB |
| 6 | Cell C | Cell C 10GB Monthly | R129 | 30 Days | ~R12.90/GB |
| 7 | MTN | MTN 20GB Monthly Recurring | R279 | 30 Days (Recurring) | ~R13.95/GB |
| 8 | MTN | MTN Monthly 10GB | R149 | 30 Days | ~R14.90/GB |
Price check advised: this bundle may vary by SIM, app, promotion, region, or checkout flow. Confirm with the operator before buying.
Quick Answer
There is no single cheapest network for every South African user. The best answer changes by bundle size, validity, public price, and whether you need a once-off top-up or better monthly value. Start with cost per GB, then check the validity period and whether the bundle fits your real usage pattern.
Open dedicated guide
Cheapest 2GB data
Useful when 1GB is too small but you still need to keep spend tight.
Current dataset view
Telkom: Telkom Monthly 2GB
Price: R59 | Validity: 30 Days | Approx. value: R29.50/GB
Cheapest 5GB data
A common mid-range benchmark for moderate prepaid usage.
Current dataset view
Cell C: Cell C 5GB Monthly
Price: R99 | Validity: 30 Days | Approx. value: R19.80/GB
Cheapest 10GB data
A strong indicator of mainstream monthly value for regular users.
Current dataset view
Telkom: Telkom 10GB Monthly
Price: R89 | Validity: 30 Days | Approx. value: R8.90/GB
Cheapest daily data
Daily bundles can keep upfront spend low, but repeating them through the month often costs more overall.
Current dataset view
Telkom: Telkom Daily 1GB
Price: R23 | Validity: 1 Day | Approx. value: R23.00/GB
Cheapest monthly data
Monthly options usually offer a better long-term cost per GB than repeated short-validity top-ups.
Current dataset view
Telkom: Telkom 40GB Prepaid
Price: R189 | Validity: 30 Days | Approx. value: R4.73/GB
Cheapest night data
Night bundles can be strong value when downloads happen in off-peak hours only.
Current dataset view
MTN: MTN Monthly 50GB
Price: R299 | Validity: 30 Days | Approx. value: R5.98/GB
Best for different user types
Best for ultra-light users
Start with the 1GB and 2GB views, then compare whether a short-validity bundle or a small monthly bundle fits your real usage better.
Best for regular prepaid users
Focus on monthly bundles and overall cost per GB rather than the cheapest one-day top-up.
Best for heavy users
The 10GB and larger monthly bundles usually matter more than the cheapest small bundle headline.
Best for night-download users
Use the night-data section and dedicated night guide rather than comparing it directly with daytime anytime bundles.
Best for coverage-first buyers
Low price is only part of the decision. Always balance value against network reliability where you actually use your phone.
Methodology and pricing notes
Dataset-backed only: this page uses the visible DataCost bundle dataset as its price reference layer. It is intended to compare public baseline bundle pricing already captured in the site data.
Public vs personalised pricing: operator-specific personalised offers, app-only promotions, and USSD campaign deals may be cheaper for some users, but they are not guaranteed across all SIMs. For that reason, they are not treated here as universal baseline pricing unless clearly represented in the dataset.
Before purchase, verify the final bundle on the operator side and use the USSD codes hub or network comparison hub for the next step.
If the intent is best prepaid phone plans, move to the best prepaid phone plans guide. If the query is already operator-specific, such as Cell C data deals, start on the homepage or jump straight to the Cell C data deals page.
Related guides and comparison pages
DataCost Home
Best Data Deals South Africa
Best Prepaid Phone Plans
Cheapest 1GB Data South Africa
Cheapest 2GB Data South Africa
Cheapest 5GB Data South Africa
Cheapest 10GB Data South Africa
Cheap Night Data South Africa
Best Monthly Data Deals South Africa
MTN Network Page
Vodacom Network Page
Telkom Network Page
Cell C prepaid data prices
Fibre prices South Africa
Fibre vs LTE/5G for home internet
How to Check Data Balance
USSD Codes South Africa
Network Comparison Hub
Methodology
Frequently Asked Questions
Which network has the cheapest data in South Africa right now?
Telkom currently leads this visible dataset-backed value table with Telkom 40GB Prepaid at about R4.73/GB.
Is the cheapest data always the best option?
Not always. The lowest upfront price can still be poor value if validity is short or coverage does not fit your real usage pattern.
Do personalised offers beat standard bundle prices?
Sometimes, yes. Operator-specific personalised or app-only offers can be cheaper than baseline public prices, but they are not universal and may differ by SIM, history, or campaign.
How should I compare data prices fairly?
Compare volume, validity, cost per GB, and whether the bundle matches your actual usage pattern. Do not compare a short-validity promo directly with a 30-day bundle without accounting for repeat purchases.
Author and review notes
Written by Riccardo Vallaro
Telecom & Mobile Services Specialist
Mobile services and telecom professional with experience across VAS, carrier billing, mobile content, and African operator partnerships.
Reviewed / updated: 4 July 2026
Why trust this guide: Guides are based on public operator pricing, USSD flows, official support pages, and South African prepaid user needs.
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