Airalo does not provide a truly unlimited high‑speed data eSIM for South Africa. The plans that carry “Unlimited” in their name actually offer a fixed allowance of 3 GB per day, after which the speed is reduced to 1000 kbps.
If a traveler needs a larger data budget, Airalo offers fixed data plans such as the CellSA‑50 GB plan, which provides 50 GB for 30 days at $49 USD, or the CellSA‑20 GB plan for 15–30 days at $35–$38 USD. These fixed plans give higher data caps and can be more cost‑effective for most users compared with the throttled “unlimited” options.