Supersonic — uncapped fibre & 5G internet provider in South Africa
Supersonic is an MTN-owned South African retail internet provider selling uncapped fibre and 5G AirFibre on month-to-month terms with free installation and uncapped fibre from R319 per month (10/5 Mbps). The 5G side is powered by MTN’s network at around 96% population coverage, while fibre is delivered across multiple partner networks. It is a budget-led connectivity brand aimed at households, with a strong wireless reach story. The honest caveat is the public service signal: the corporate Google profile carries heavy customer-service dissatisfaction, so it is worth weighing service terms alongside the price before you sign.
Key facts
| Who they are | An MTN-owned South African retail internet provider offering uncapped fibre and 5G AirFibre to households |
| Products | Uncapped fibre delivered over partner networks, plus 5G AirFibre fixed-wireless internet on MTN’s network |
| Network backing | Powered by MTN at around 96% population coverage on the wireless side; multiple SA fibre operators on the FTTH side |
| Commercial model | Month-to-month with no fixed-term contracts, plus free installation, activation and delivery across South Africa |
| Coverage | National on the 5G side via MTN; fibre availability depends on the partner network at your address |
| Service signal | Public customer-service feedback on the corporate Google profile is heavily negative — confirm support and billing terms before signing |
| ICASA licence | Operates as a licensed South African internet service provider on MTN’s licensed network and partner fibre |
| Pricing | Uncapped fibre from R319/month (10/5 Mbps, Openserve WebConnect) on the published fibre catalogue; promo tiers step up after month 4–7 (e.g. R339 → R439). Month-to-month, free standard installation, free activation and a free-to-use router (T&Cs apply); 5G AirFibre priced after a coverage check — verified at supersonic.co.za, 4 Sep 2026 |
| Listed In | Fibre Internet Providers |
Supersonic pairs MTN 5G reach with entry-level fibre
Supersonic’s draw is coverage and price: 5G AirFibre rides MTN’s network at around 96% population reach, so a fixed-wireless line is available in many areas that fibre has not reached, while uncapped fibre is delivered over partner networks where it is lit. Month-to-month terms and free installation lower the barrier to trying a line, and uncapped fibre from R319 per month is competitive against peer retail ISPs, though promo tiers step up after the first months. The offset is the service record: the corporate Google profile shows heavy customer-service dissatisfaction, with billing and support-access complaints recurring. That is not a reason to rule Supersonic out on price alone, but it does make it worth reading the service terms and comparing peer ISPs before committing. Check 5G and fibre coverage at your address first, then weigh price against the service signal.
Who Supersonic is a fit for
- Budget-led households wanting uncapped fibre or 5G AirFibre with no fixed-term contract.
- Areas with strong MTN 5G reach but limited fibre, where AirFibre is the practical option.
- Buyers who value free installation and month-to-month flexibility and will confirm service terms up front.
How Supersonic sits in the Fibre category
- 259 verified fibre internet providers on WhichVoIP; 183 carry a Google rating.
- Google 1.1 from 749 reviews — rank 183 of 183 of rated providers in the category (182 rate higher).
- Category median is 54 reviews, so this is a large body of feedback.
Computed from the WhichVoIP provider register; refreshes as ratings and reviews change.
Get quotes for fibre and connectivity
Two ways forward, both free for buyers and with no obligation — WhichVoIP doesn’t take a cut from your contract.
Get up to 3 quotes
Tell us your address and what you need — uncapped fibre, 5G AirFibre, or a business connectivity option — and we’ll send up to 3 quotes from suitable South African providers to compare. No call centre, no commitment.
Get up to 3 quotes →Or request a single callbackFree for buyers. We don’t take a cut from your contract.
Weigh up the preferred alternatives
WhichVoIP partners in this category — paying sponsors, independently scored. Scores link to the review.
Compare fibre internet providers →Commonly asked questions
What does Supersonic offer?
Supersonic is an MTN-owned retail ISP offering uncapped fibre over partner networks and 5G AirFibre fixed-wireless internet on MTN’s network, on month-to-month terms with free installation and uncapped fibre from R319 per month (10/5 Mbps).
Is Supersonic owned by MTN?
Yes. Supersonic is an MTN-owned brand, and its 5G AirFibre product runs on MTN’s network at around 96% population coverage. Fibre is delivered across multiple South African partner fibre operators.
Is my address covered by Supersonic?
5G AirFibre is available wherever MTN’s 5G reaches, while fibre depends on which partner network is lit at your address. Run the coverage check on supersonic.co.za, or request quotes through WhichVoIP to compare the options at your street.
Does Supersonic require a contract?
No. Supersonic’s plans are month-to-month with no fixed-term contract, and it advertises free installation, activation and delivery. Confirm any router or service terms before signing up.
How is Supersonic’s customer service?
Public customer-service feedback on the corporate Google profile is heavily negative, with recurring billing and support-access complaints. Weigh that against the price, compare peer retail ISPs, and confirm the support and escalation terms in writing before committing.
Does Supersonic offer business voice or VoIP?
Supersonic is a connectivity retailer focused on fibre and 5G internet, not a business voice provider. If you need a phone system alongside a line, compare South Africa’s top-rated VoIP and cloud PBX providers through WhichVoIP and request quotes.
This listing is maintained by WhichVoIP, an independent South African telecoms comparison service running since 2019. Details are verified against the provider’s public website and were last reviewed on 14 July 2026.