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DataCost.co.za
Checked 4 August 202611 current official offers reviewed

Best 20GB data deals in South AfricaAugust 2026

A practical comparison for people who want roughly 20GB this month. Every restricted wallet and eligibility condition stays visible, so a split bundle cannot masquerade as 20GB of general daytime data.

Quick verdict

Standard Bank Connect is our best overall 20GB pick

Connected Gigs Plus 20GB plan provides 20GB of pooled anytime data for R209, or R10,45 per anytime GB. 20GB is available as one pooled anytime allowance.

Eligibility: Requires an eligible Standard Bank account in your own name, in good standing, and a Standard Bank Connect SIM or eSIM; applicants must be 18+.

This is a price-and-structure result, not a coverage or speed claim. Check signal where you live, work and travel before moving networks.

Best unit value: FNB Connect offers 25GB for R215, or R8,6 per anytime GB.

Like-for-like view

20GB-class offer comparison

Rows marked “context only” are current and useful, but do not enter price awards because the validity, product bundle or restriction makes the price non-comparable. All R/anytime-GB calculations exclude night, streaming, social and daily-release wallets.

Best overall

Standard Bank Connect

Connected Gigs Plus 20GB plan

Advertised: 20GB anytime

R209

Pooled anytime
20GB
Restricted
None listed
R / anytime GB
R10,45
R / advertised GB
R10,45
Validity
Monthly allocation
Billing
Recurring monthly

Requires an eligible Standard Bank account in your own name, in good standing, and a Standard Bank Connect SIM or eSIM; applicants must be 18+.

Buy via Standard Bank Connect website.

  • The live Standard Bank Connect checkout lists 20GB as the plan allocation at R209 per month.
  • Subscription data expires on the last day before the next debit-order date and does not roll over.
  • The subscription is billed monthly in advance; recheck the live checkout before ordering.
Checked 2026-08-04
Official source
Best R / anytime GB

FNB Connect

25GB monthly plan

Advertised: 25GB anytime

R215

Pooled anytime
25GB
Restricted
None listed
R / anytime GB
R8,6
R / advertised GB
R8,6
Validity
Monthly allocation
Billing
Recurring monthly

Requires a qualifying FNB transactional account and an active FNB Connect SIM or eSIM; applicants must be 18+ or use an eligible linked youth account.

Buy via FNB app, FNB Online Banking, FNB Connect call centre.

  • This is a month-to-month data plan, not the more expensive once-off bundle with a matching headline size.
  • Prices come from the FNB Connect Retail Annual Pricing Guide valid 1 July 2026 to 30 June 2027.
Checked 2026-08-04
Official source
Lowest advertised price

Vodacom

Prepaid LTE 10GB Anytime + 10GB Night Owl

Advertised: 20GB total: 10GB anytime + 10GB Night Owl

R149

Pooled anytime
10GB
Restricted
10GB night
R / anytime GB
R14,9
R / advertised GB
R7,45
Validity
30 days
Billing
Once-off purchase

Available on the Vodacom Prepaid LTE price plan.

Buy via *123#, VodaPay app.

  • Half of the advertised total is Night Owl data usable only from 00:00 to 05:00.
Checked 2026-08-04
Official source

Vodacom

Prepaid LTE 20GB Anytime + 20GB Night Owl

Advertised: 40GB total: 20GB anytime + 20GB Night Owl

R229

Pooled anytime
20GB
Restricted
20GB night
R / anytime GB
R11,45
R / advertised GB
R5,73
Validity
30 days
Billing
Once-off purchase

Available on the Vodacom Prepaid LTE price plan.

Buy via *123#, VodaPay app.

  • Half of the advertised total is Night Owl data usable only from 00:00 to 05:00.
Checked 2026-08-04
Official source

AirMobile by Afrihost

20GB data bundle

Advertised: 20GB anytime

R250

Pooled anytime
20GB
Restricted
None listed
R / anytime GB
R12,5
R / advertised GB
R12,5
Validity
Monthly allocation
Billing
Recurring monthly

Open month-to-month service; a new AirMobile SIM or supported MTN SIM/APN setup is required.

Buy via Afrihost website, Afrihost app.

  • The official page describes this as anytime data with no fixed-term contract.
  • Unused monthly data rolls over until the last day of the following calendar month, for a maximum rollover period of 31 days.
Checked 2026-08-04
Official source

Nedbank Connect

20GB data bundle

Advertised: 20GB anytime

R250

Pooled anytime
20GB
Restricted
None listed
R / anytime GB
R12,5
R / advertised GB
R12,5
Validity
30 days
Billing
Once-off purchase

Requires a Nedbank account and an active Nedbank Connect SIM or eSIM.

Buy via Nedbank Money app, Nedbank Online Banking.

  • The official catalogue lists these as standard data bundles and lists social bundles separately.
  • DataCost treats the standard allocation as general-use data; confirm the checkout wording before purchase.
Checked 2026-08-04
Official source

Melon Mobile

20GB monthly plan

Advertised: 20GB anytime

R299

Pooled anytime
20GB
Restricted
None listed
R / anytime GB
R14,95
R / advertised GB
R14,95
Validity
30-day monthly plan
Billing
Recurring monthly

Open month-to-month build-your-own plan with zero voice minutes and zero SMSs; requires a Melon SIM or eSIM.

Buy via Melon Mobile checkout, Melon Mobile app.

  • The live checkout price is used instead of older marketing examples.
  • The plan cycle is 30 calendar days; unused data does not expire while a valid paid plan remains active under Melon’s Terms of Use.
Checked 2026-08-04
Official source

Cell C

10GB Anytime + 10GB Nite bundle

Advertised: 20GB total: 10GB anytime + 10GB nite

R469

Pooled anytime
10GB
Restricted
10GB night
R / anytime GB
R46,9
R / advertised GB
R23,45
Validity
30 days
Billing
Once-off purchase

Requires an active Cell C line.

Buy via *147#, Cell C website, Cell C app.

  • Only 10GB is pooled anytime data; the other 10GB is Nite data that expires at 04:59:59.
Checked 2026-08-04
Official source

FNB Connect

20GB data bundle

Advertised: 20GB anytime

R549

Pooled anytime
20GB
Restricted
None listed
R / anytime GB
R27,45
R / advertised GB
R27,45
Validity
30 days
Billing
Once-off purchase

Requires a qualifying FNB transactional account and an active FNB Connect SIM or eSIM; applicants must be 18+ or use an eligible linked youth account.

Buy via FNB app, FNB Online Banking, FNB Connect USSD.

  • Prices come from the FNB Connect Retail Annual Pricing Guide valid 1 July 2026 to 30 June 2027.
Checked 2026-08-04
Official source
Context only

Capitec Connect

20GB 60-day data bundle

Advertised: 20GB, or 24GB when the number is linked

R250

Pooled anytime
20GB
Restricted
4GB conditional bonus
R / anytime GB
R12,5
R / advertised GB
R10,42
Validity
60 days
Billing
Once-off purchase

Requires a Capitec account and an active Capitec Connect SIM.

Buy via Capitec app, Capitec Connect USSD.

  • The official table lists an extra 4GB for linked numbers.
  • Useful as a longer-validity alternative, but not like-for-like with a 30-day offer.

Excluded from monthly awards because the official validity is 60 days.

Checked 2026-08-04
Official source
Context only

MTN

Entertainment 20GB bundle

Advertised: 20GB streaming-only data

R499

Pooled anytime
0GB
Restricted
20GB streaming
R / anytime GB
Not comparable
R / advertised GB
R24,95
Validity
30 days
Billing
Once-off purchase

Requires an MTN prepaid line and an active supported entertainment-service account.

Buy via *142#, MTN app.

  • Usable only for the entertainment services named in MTN’s terms; it is not general internet data.

Excluded from all general-data awards because the entire allocation is streaming-only.

Checked 2026-08-04
Official source

Prices and allocations were checked against the linked official sources on 4 August 2026. Provider checkout terms can change without notice; recheck before paying.

How DataCost counts 20GB

Pooled anytime

A general-use wallet available as one monthly pool. Daily releases remain separate even when each daily slice works throughout the day.

Night

Data usable only in the provider’s overnight window. It counts toward the advertised total, not the anytime target.

Streaming or social

App- or service-specific wallets stay separate because they cannot support every normal internet task.

Other restrictions

Daily releases, device locks and conditional bonuses get their own fields and never disappear inside a headline number.

Why this ranking is editorial, not commercial

DataCost does not raise an offer because it has a bigger advertising number, includes an affiliate opportunity or comes from a major network. Every qualifying row follows the same deterministic order.

  1. 1Guaranteed pooled anytime data must fall from 20GB up to, but not including, 30GB.
  2. 2Validity must be 28–31 days or an explicitly monthly allocation.
  3. 3The source and price must be current, official and publicly reproducible.
  4. 4Best overall uses the lowest monthly price; ties use fewer access restrictions, then once-off billing. Unit value is awarded separately.
Read the full methodology

Use-case guidance

For everyday monthly use

Prefer the best-overall row if you need maps, browsing, hotspot use and app updates at varied times.

If you can schedule downloads

A lower advertised-price split bundle may work, provided the overnight wallet genuinely matches your routine.

For YouTube and WhatsApp calls

Use anytime data for the budget calculation unless the provider explicitly supports the service inside a restricted wallet.

For visitors

Check RICA, SIM delivery, eSIM support and account requirements. This page does not assume every banking MVNO is open to every visitor.

Source register

Official pages checked for this comparison

Each link goes directly to the provider or provider-owned terms document. Aggregators and copied price tables are not used as evidence.

  • Standard Bank Connect
    Standard Bank Connect live SIM plan checkout
    Checked 2026-08-04
    Open
  • FNB Connect
    FNB Connect Retail Annual Pricing Guide 2026–2027
    Checked 2026-08-04
    Open
  • Vodacom
    Prepaid Price Plans | Prepaid LTE Data Bundles | Vodacom
    Checked 2026-08-04
    Open
  • AirMobile by Afrihost
    Data Only | AirMobile | Afrihost
    Checked 2026-08-04
    Open
  • Nedbank Connect
    Pitch-perfect prepaid bundles | Nedbank Connect
    Checked 2026-08-04
    Open
  • Melon Mobile
    Melon Mobile Build Your Own Plan checkout
    Checked 2026-08-04
    Open
  • Cell C
    Cell C live data bundle catalogue
    Checked 2026-08-04
    Open
  • Capitec Connect
    Data & Airtime Packages | Capitec Connect Bundles
    Checked 2026-08-04
    Open
  • MTN
    Prepaid MTN Entertainment Bundles terms
    Checked 2026-08-04
    Open

Freshness and monthly history

This public URL stays evergreen. Each monthly review is stored as a separate internal snapshot, so updating September’s prices will not erase the August evidence. The visible month, checked date, source register and structured data all come from the same active snapshot.

A provider may change a checkout price between reviews. If the price or eligibility shown here differs from the official checkout, use the provider’s current terms and tell DataCost so the next review can correct the record.

Current snapshot

Month
August 2026
Checked
4 August 2026
Method
v1.1.0
Official rows
11

Related DataCost pages

Monthly deal tracker hubBest 10GB dealsBest 30GB dealsCheapest data guideBest monthly data guideNetwork comparison hubvodacom network pagecell c network pagemtn network page

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 August 2026

Why trust this guide: Guides are based on public operator pricing, USSD flows, official support pages, and South African prepaid user needs.

Found something outdated? Send a correction.